The Evolution of Bears
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- čas přidán 2. 06. 2024
- Bears are able to live and sometimes thrive from the North Pole to the tropical rainforests around the equator and although they are largely confined to the forests nowadays, in the not too distant past they dominated grassy plains as well. And in overcoming the challenges of each new habitat they migrated into presented, they have evolved to drastically change diets. Bears evolved from small carnivorous animals and yet have become omnivorous, insect eaters, or have a diet occupied entirely of plant foods. So how have bears been able to evolve to eat almost any food in a very small amount of time.
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Sources:
www.semanticscholar.org/paper...
bmcecolevol.biomedcentral.com...
www.researchgate.net/publicat...
www.sciencedirect.com/science...
www.researchgate.net/figure/S...
www.pnas.org/content/116/27/1...
I used to think as a kid "how do bears pick all the bees out of honey when they eat it?" Now as an adult I realise bears just eat the bees like badasses
Same! I think I must have been coasting on a Pooh Bear education for that part lol 😆
Often the bear is going after the hive for the larvae, not the honey. It likes the honey, of course, but the bee larvae are where the nutrients are as far as the bear is concerned.
Yeah, that's true, but they actually just like his other guy said, preferred the honey and the larvae more, and they still get stung quite a lot still....
Protein snack
@@holysword876 Pure Protein!
The most recent species, the Smokey bear, is easily identified by its stetson, jeans and shovel.
I thought the most recent species is the Bear Grylls, identified by its British accent, extremely risk-taking behavior and borderline insanity combined with a peculiar determination to be on camera.
@@dondragmer2412 and his obsession with drinking his own piss
@@eggmeister6641 “mr bear this is a hotel, you don’t have to drink your piss here...”
What about the infamous faz bear? With its mostly identifiable hat, microphone and bow tie.
I was forced to sing the song in 6th grade...
Whenever I see a picture of a badger now, I will always remember that facebook meme that went around: European badgers look like they are about to invite you over for tea and crumpets, American bagers look like they are about to mug you in a dark alley to support their meth addiction. Or something to that effect.
What is this "Wind in the Willows"?
@@anr1593 yes but Mr Toad is now Prime Minister
They are not very closely related at all though, american and European badgers that is, also honey badger are not even ‘true’ badgers either. Basically badger is just the word we use to refer to fear and violence in furry squat form.
@@impendio Interesting info, didn't know that.
Badger badger badger badger MUSHROOM MUSHROOM
aww that little polarbear cub with its massive paw mittens. soooo cute
We learned today the evolution of possibly the cutest creatures alive
It’s cute but will literally eat you alive n not think anything about it. Savages
@@digby5786 instinct, imagine having high anxiety and you can’t help defending yourself. For all they know we could try to kill them too
@@Gilgamesh54 yes but therefore we shouldn’t treat them as cute puppies or anything we should treat them with respect not get close and let it be. We get close n start trying to take a selfie with it we deserve to get eaten. All I think is treat animals with respect and especially treat predators with it cuh they can kill us like nothing if we’re stupid
@@digby5786 yep, I just thought you meant savages as in heartless
Fact: In 2014, Archaelogists have dug up a giant polar bear skull measured 16 inch long in Northern Alaska which could inspired the Inuit legend of King Bear or Weasel Bear. The skull is 1300 years old and scientists believed that it is a subspecies of modern polar bear.
Not exactly an impressive size for a polar bear
@@sebastianhunter144 i've found a 17.5" long skull on Google that apparently "is a replica of a specimen believed to be the second largest ever found." You are right. Other skulls are around 16"
40 cm
16 inches = 40 cm
A 16" polar bear skull is not "giant".
It's a current healthy adult.
Interesting note about pandas: the parts of bamboo that they eat are specifically the high-protein portions.
I'm happy to see the evolution of bears getting more attention. It is truly remarkeable on how divers this group was and still is. A good combination of brains and brawn.
there is no evolution, humans are just noticing these things for the first time. idiots lol
@@WintJames your head looks like an egg with a fungal infection.
Also keep your selfish thought for yourself evolution is a proven fact that is observable.
@@matthiasfloren2610 Easy now he might have some evidence that evolution isn't real, i mean just look at him theres no evolution there
@@darianglendenning1252 Yup a massive waste of air
@@WintJames lnbred
Fascinating video. I didn’t realise bears had diversified so quickly or so recently
A lot of native Americans don’t want to kill them and worship them on account if you skin their paw it looks like a human hand and they are viewed as guardians/protectors
@Jesus Died for your sins and Rose the 3rd day But evolution is real.
@@MbeziAmsterdam micro evolution is real, macro, is not. NWO shit
@@dylanfreeman9160 😅
@@dylanfreeman9160 Micro and macro evolution is the same thing with a different time frame.
4:31 Awwwe the bear cubs falling in mama's tracks.
The closest I can get to walking through these fascinating habitats - I’m well aware that it wouldn’t be the safest place to wander , but you can’t help but marvel at how extraordinary and mesmerising some of these ancient beasts must have been to look at. Nature is incredible
I agree! And that is why we must protect it by preventing pollution and climate change.
You might be surprised by how safe it probably was for early humans to walk among large predators like these thousands of years ago. It wouldn't be safe alone, but one of the major contributing factors behind every major large mammal going extinct since the end of the Ice Age was mankind. When we socialize in large groups, we're practically unstoppable as a species. It's also why, when you look out your window every morning, you don't see any of these extinct animals. We conquered them all or hunted them to extinction.
@Joske Vermeulen so you don't think that humans are responsible for the current rise in temperature? Interesting, please elaborate on your argumentation. However one thing that humans do cause and that is for certain is pollution. The mass amounts of plastic in the ocean and along the road are not created by nature I believe.
@Joske Vermeulen ook, ben jij Nederlands of Vlaams?
@Joske Vermeulen ah ok, ik snap het. Dank u wel voor de informatie! Ik wens u een fijne dag!
DRINKING GAME!!!
Take a sip of your drink when there is:
- a time lineage
- a genetic tree
- a new illustration
- a size comparison
Take a shot when:
- the narrator says "however"
Gonna be wasted from that man
But I don't want to die
Even my ghost would die.
Most Bears: Awesome killing machines.
Panda: Literally dying because they're too fat to get it up.
It isn't like the animals are totally incompetent habitat loss and fragmentation is the biggest factor and one unfortunately not getting resolved as development spreads like wildfires through China. Basically they have been reduced to isolated islands of habitat and as bamboo colonies live a century or so before flowering going to seed and dying without a large territory with multiple generations of bamboo they can starve to death.
As such with the loss of their habitat (which originally spanned over much of east-southeast Asia) the animals are basically only left alive in zoos and have lost much of their wild behavior. From what I have read it seems that rather than the animals being unwilling to mate entirely it may have more to do with the attempts to restore genetic fitness i.e. the bears want to reproduce with genetic close relatives from their same isolated inbred subpopulations.
So it looks to be a far more messy situation and barring the restoration of sufficiently large ranges of bamboo forest habitat one unlikely to ever improve.
@@Dragrath1 Yup, it's a complicated situation.
@boi mac mmmhhhh
That’s the ones in captivity
@@todo9633 Not really if China better planned their development, something communist are supposed to be good at
When i joined this channel at 60k subs, i commented.
"Why does this channel not have atleast 1 mil subscribers?
Good to see they are on the way
That's a lie, lol. You have only made 2 other comments on this channel and they're not it.
@@sanin3213 ding dong ding
@@sanin3213 i did make that comment you goof. CZcams might just have removed it?
@@mortzon5681 nah
Only 940,000 subs to go, ay?
Bears are the scariest terrestrial animals, IMO. As a backpacker, bears are the only animals in my region (The Rocky Mountains) that really frighten me while traveling in the backcountry. Incredibly strong, intelligent, and increasingly become unafraid of humans due to habitat competition.
Fascinating predators, but I never enter the backcountry without being armed.
I don’t know if they are around where you live but I would be more worried for mountain lions, a bear wouldn’t actually want to try to eat a human but still dangerous.
@@e9cw196 If a bear is hungry than yes also they are in the Rockies, mainly black bears(if I recall, I’m not super confident on it) smaller but still no push over, also if you near the Cubs a mother will rush you to protect them, warranted or not.
Lived in the backcountry for years. I've encountered black bears out on hikes but have not been close enough to be interesting to them, thankfully. Personally though, if I'm alone I'm more scared of a mountain lion or grizzly.
Try a hippo or rhino or elephant
@@e9cw196 Meanwhile bears in Transylvania, romania out there mauling people as a norm.
Seeing the Momma bear and her cubs and seeing the Cub at the back keep falling into the snow with each step made me smile.
That Raccoon photo you chose is too friggin cute!!
It's like "Hi I like your leftover snacs!"
I can remember all text books used to claim that Pandas were not true bears but more closely related to raccoons. I guess they are now bears. Like Pluto. Was a planet and then it wasn't and now it is.
@@Talltrees84 pluto isn't a planet tho...
“waddup!!”
@@AAAAAA-qs1bv Pluto was once a planet but reclassified as a dwarf planet
Now this is what I call, the bare necessities of life.
Bear*
Lol
That's bearly even funny that's kinda sus bro
@@eclipsedwyvern729
No need to make a hulla-Baloo.
@@eclipsedwyvern729 Looking kinda sus ngl
I always thought they were very closely related to dogs, never thought it’d be seals.
As a kid, I always did too. But when you look at the caniform family tree, you see that canines split off before everything else. So bears are more closely related to skunks, raccoons, seals, walruses, weasels, badgers, and wolverines than any of those things are to dogs. Pretty crazy!
I thought they were related to dogs or cats closely.
@@Solomon0424 Cats and dogs are very distinct evolutionarily. Like, a house cat is closer to a hyena than it is to a dog.
@@gab.lab.martins I thought hyenas were related to dogs as a kid.
@@Solomon0424 nope, Feliformia. They’re as closely related to dogs as we are to lemurs and tarsiers.
The little racoon looks like a bandit who was just told to put his hands up by the police. Really cute.
RLM
Bears actually had a foothold on a grasslands habitat into the 1800's. There were a subspecies of grizzly bear adapted to hunt bison.
I would love a video on how rattlesnakes evolved, and what a proto rattle would be
I have an amusing theory of how bison invented rattlesnakes. If you’ve ever seen a bison leap safely away from the first sound of a rattle, you can see how a rattle would keep both populations alive. No poisoned bison, no squashed snakes. Win/win.
@@DonnaBarrHerself thanks for sharing, super interesting.
So we need a bison who is slightly more jumpy then the rest? :)
The baby bears bumbling along at 4:31 are the cutest things I have ever seen.
Lol at 4:31 those bear cubs tripping into snow one after another and getting back up to chase momma bear is super adorable ☺
Sat through a ridiculous 4:04 minute self betterment ad to watch this. That is how much I love this channel's approach to paleontology and evolution.
I love bears, yay!
just imagine in a few thousand years the small mammals who will be able to evolve. If we could see it we'd find it weird but that would be amazing too
Giant weasels.
Few thousand years? More like a few million maybe
@@maniacram Agreed. I don’t think there would be much changes in a few thousand years
to enable such drastic evolution we would need a mass extinction event first. we are working on that as a species though, so looking good.
@@Vianyte
Already happened a few times.
Bears pretty much evolved in a similar pattern to tyrannosaurids,by first appearing as small humble carnivores only to get huge quickly afterwards to dominate their habitats.
Except tyrannosaurids got big after all the other big predatory theropods in Laurasia died out, while bears evolved alongside competition (though they managed fine regardless)
@@bkjeong4302 Not too sure about that theory in reference to tyrannosaurids. Future discoveries may invalidate it.
@@dondragmer2412 But there isn't a reason at the moment to assume this is false.
@@bkjeong4302ण..
Love it when you pick a branch on the tree of life and examine each twig on it in detail
Thank you for an unbearably high quality video on bear evolution. This channel is top notch and you produce very good and interesting videos. Thank you!
Hmm yes... Mexico
A video talking about my favorite group of mammals, thank you bro.
i saw a new video from mothlight media, then saw it was about bears, and i swear i almost broke my trackpad i clicked so fast lol
@@jameshays2646 YES
Early!!!! This channel anwsers all the questions I never thought to ask.
Moth Light Media's channel is among the 'S Tier' of my CZcams subs (along with Tier Zoo and PBS Eons of course)
Too
Apparently the artic ice sheet shrinking away has led to a lot of crossbreeding of polar bears with grizzlies. I wonder if the crossbreeds are going to end up with the best of all worlds... the ability to break fat down more efficiently along with the ability to eat nuts and fruits again
that would be fascinating and terrifying
A minute in and I'm already mind blown. I would have never guessed bears and seals were related at all!
"Agriotherium" literally means WILD BEAST in Greek. Best name for an animal
I was just looking up the atlas bear (Africa's last native bear species) last night. Good timing.
The smaller caniforms (superfamilies Procyonoidea and Musteloidea) make up a separate infraorder named Galofacia (meaning weasel-faced)
you took the words right out of my mouth fam. Mustardloidea and canibisforms.. Inafraorder. I mean you’d have to be an idiot not to understand this stuff... (nervous laughter) 😬
I thought musteloidea included the family procyonidae?
It actually does not, instead Procyonidae and the other families Nasuidae, Ailuridae, and Mephitidae make up a separate superfamily based on some features that are not found in the families Mustelidae, Melidae, Ictonychidae, or Lutridae, members of the family Mephitidae evolved to look like badgers and ictonychids due to convergent evolution
Indicating that members of the superfamily Procyonoidea demonstrate many examples of convergent evolution with other caniforms
Its amazing to see the history of bears. They're truly majestic and beautiful animals.
I left my job for some minutes for this, thanks!!!
My uni has a short faced bear and it's a thing of beauty. It makes sense they went extinct because holy hell the amount of food it would have taken to keep that thing running..
I love that this reminds me of a car lol
hey man, thanks for producing this awesome content.
i'm studying biology, & one of the easiest ways to get the examiners to like your essays is to use examples that aren't in the notes. this channel is a gold mine for those
Interesting that here in Kodiak we have both 1500 lb stellar sea lions and 1500 lb Kodiak bear. Each a reflection of the others ornery nature.
I remember seeing a raccoon in the day light and thinking that it moved and ran like a bear. And I looked it up and sure enough it is a close cousin. Very nice video. Thank you.
Raccoons are also called "trash pandas".
This was a neat video. I liked it because I learned something from it. Thanks, have a nice day.
P.S.: I'd love to learn more about the extinct Giant Cave Bear. It seems like such an iconic/archetypical/legendary/mythical/fantastical idea. To learn that there is actually a species embodying that idea (though sadly extinct 😥) really piques my curiosity! What do we know about them?!
Fun fact: the term for walking on the whole foot/palms is plantigrade
And the term for those who are constantly late is tardigrades.
Yah I know I watch Roanoke gaming
I hope you know that this is one of the best channels on CZcams.
Also chapalmalania sounds like a real chap, a real mate at the pub and what not
After weeks of being on my recommended, I finally gave in.
Great video, I so enjoy anything about bears. They are by far my favourites and the reason I started studying biology.
As always, great content. I found it helpful how you always went back to the timeline graphic as you traced the different lineages.
Now I want to know what it was about bear teeth that was so novel.
Seriously, I love this channel!
Wow this channel always blows my mind, it's great for curiosity!!
I love your channel so much! I've been here since your first episode ever, and I will never stop watching your videos!
Living carnivorans are divided into twenty-five extant families: Canidae (dogs), Ursidae (bears), Ailuropodidae (giant panda), Phocidae (seals), Cystophoridae (hooded seal and elephant seals), Otariidae (sea lions and fur seals), Odobenidae (walrus), Procyonidae (raccoons, ringtail, and cacomistle), Nasuidae (coatis, olingos, olinguito, and kinkajou), Ailuridae (red panda), Mephitidae (skunks and stink badgers), Mustelidae (weasels, ferrets, and minks), Melidae (badgers), Ictonychidae (zorillas, marbled polecat, african striped weasel, patagonian weasel, grisons, wolverine, tayra, martens, and fisher), Lutridae (otters), Felidae (cats), Hyaenidae (hyenas), Protelidae (aardwolf), Viverridae (civets and binturong), Herpestidae (mongooses), Eupleridae (malagasy carnivorans), Genettidae (genets), Poianidae (oyans), Prionodontidae (linsangs), and Nandiniidae (african palm civet), the latter ten families are in the suborder Feliformia while the former fifteen families are in the suborder Caniformia.
@Weasel weasel
@@Draco1928MCVideos Now that's pretty ironic if you ask me
The sheer variety of niches occupied by mustelids is astonishing too. Incredible group of animals
I many of the families you listed are generally considered subfamilies.
@Weasel Here in NZ, unfortunately, with our native species which evolved in the absence of mammals, Mustelids, all introduced by colonists are, as a whole, considered pests to ideally be completely eradicated.
www.doc.govt.nz/nature/pests-and-threats/predator-free-2050/
I'm sceptical whether this can be achieved, but all for the effort.
Mustelids are successful and persistent survivors here, penetrating almost everywhere pretty quickly. Our native birds are just a Mustelid smorgasbord!
This video was un-bear-lievably interesting!
It’s so beautiful how we can look back at the history of life on this planet and realize just how small our existence is on the time scale. Makes me feel like a small part of something bigger.
And yet we are managing to destroy it all in record time
Next you should do the evolution of clams
Oh boy an evolution video! I sure hope the comments aren’t stupid and religious for no reason!
yes damn kids are annoying
Even as a catholic person, I believe in evolution, it's kinda complicated but I wanna know more..
@@pinkou4501 its very interesting! Im just talking anout all the christians calling this bideo a fairytale for no reason
@@prowlbeast1959 Yeah.. They're kinda annoying, since I'm an over thinker, and I can't prove that they're wrong because, *its hard to argue with someone who's dumb, than smart*
@@pinkou4501 Yeah, Ive tried… They usually end up calling me a sinner or something
I love his vids on evolution. They are so cool.
Thank you for covering so much in this video! It's great how you make these fascinating creatures look even more interesting by raising points that I want to learn more about!
Great video! Thanks for uploading!
I love this channel so much
Yes, very chill :3 I'd turn the music up just a touch more then mwha you're there.
I love how much you like biology it's dope 👽
Your videos are amazingly educational and interesting. TY!
Awesome video, super well made
Very interesting evolution, I pay more attention to earlier eras like the mesozoic but some mammal evolutions like the bear are worth watching/reading
I miss the background music. Excellent channel.
I think it's easier to concentrate without the music
I love the music too
Love this! Thank you!
I've always wanted a more in-depth look at bear evolution! Thanks!
Why do such dangerous animals have to be unreasonably cute?
I'm just glad they haven't yet evolved into Bear-Crabs, yet.
🅨🅔🅣
Always great work, and a wonderful listen!
That was lovely........thank you.
Released 1 minute ago: Already 17 likes. Keep up the good work, your content is amazing!
Additionally amphicynodontids are also basal members of the infraorder Cynofacia
Your channel is incredible man. Please keep up the amazingly informative work
great video as always 👍👍👍👏👏👏
The comments saying *evolution isn't real* makes me sad
I love bears. They are beatiful, strong, solitary, mysterious, have incredible sense of smell and they are a central part of folklore and mythology here in Norway. I wonder how we could best sum up the video? The bears evolved from creatures living in more forest covered environments, but as climate changed, evolved to have a more omnivorous diet and as far as we know seals are the closest relative? And the different kinds of bears we have today evolved from a common ancestor around 5 million years ago? What else? Thanks for great video!
just wanted to say thank you for making these videos !! greatly greatly appreciated ! this is what CZcams was made for
Great documentary!
I’m a tree worker and i would love a video on the evolution of woody flowering plants 🥺💚
Please do a Video on figs and fig-wasps (Agaonidae) and their symbiosis! Like how and why these fruits often kill their pollinators, but the wasps need the fruit for reproduction!
Nice One ~ Interesting, Informative plus Enjoyable! Cheers
This is real high quality stuff. Amazing channel.
Dude this was made while I was in school!😂
I still would have expected to have polar bears to have a very high bite force. After all they need to be able to bite through the fur and blubber of seals. I'd also expect that cracking bones for marrow is a good adaptation to an environment where food is extemely scarce and for that you need a good bite.
Cool video! Would love to see more like this about different animals and their evolution
Excellent coverage of this most interesting family
It's a festive day when MLM uploads a video.
Keep it up fellas
I really enjoy the style of your videos. It makes it easy to catch up on what have been learned since I did biology in High School. I feel much better informed every time I watch one. Thank you for your hard work.
Quality content, I feel as though this channel must be on the rise or about to be. Subscribed for sure
Well done. Thank you! 👏
Mum, i'll do my homework incredibly quickly ! As quick as the bear evolve its diet.
I'm not sure if the teeth was the most important part of their diet adaptivity as much as their digestive system and metabolism. I would think the teeth was the only factor that was observable in the fossil record.
Well teath are a good sign in what an animal may be related to and what they eat
yes your back i love your channel!
Extremely informative video