Animal Behavior - CrashCourse Biology #25
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- เผยแพร่เมื่อ 11 ก.ย. 2024
- Hank and his cat Cameo help teach us about animal behavior and how we can discover why animals do the things they do.
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Vampire Bats regurgitating blood into the mouths of their comrades is somehow both heartwarming and terrifying. So thanks for that.
I bet when we shoot a bunch of bombs into the air because of an important date (July 4th) Dogs must have the same thought.
I have a Biology exam tomorrow and these videos are saving my life
D.N. K.
D.N. K. Gay
@@BeanDar why do you have to say that, it's just another comment on the internet.
@@cordless157 Look here bud, you better get back to your own stepping grounds. Mind your own turf
😂 That escalated real quick
the SciShow team also produces the CrashCourse Biology videos... we're the same people!
I can across your video on Turbo Feline Roadmap - there's many great videos there that will help out
*OK* , SciShoww.... Nobody asked you...
Green's cat, not to be confused with Pavlov's dog.
I see what you did there
Through the whole video, I couldn't help thinking, "When does Cameo get a treat?"
*I loved this episode!*
Thanks Hank and the producers, there really isn't much to find about Ethology on the net. I have an important project in school next week and this really saved me a lot of time.
Hank, you are my new hero! I teach an animal studies class and I have only just discovered CrashCourse and I am in LOVE!! You make these topics exciting to learn about and easy to understand. I cannot thank you enough for sharing your wonderful brain with the world! :)
You can explain things in 10 min better than my ethology professor in few hours. Thank you :)
A note on those South American vampire bats; they also exhibit tit-for-tat. In a somewhat cruel experiment, researched grabbed some bats leaving the nest and injected their sacs with air using a syringe and shoved them back in the nest. To their neighbors, these bats appeared to be engorged, having lots of blood to share, but this was only an illusion so the bat doesn't feed the other's babies. In return, the other mothers won't feed the babies of the bat perceived as not sharing with the others.
Angelina Rigsby Wow, that's fascinating!
What experiment is this please?
There is a video on dreaming planned for the SciShow channel. Look for it there in September!
You had me at: "My cat" :3 Also the fact that Crashcourse Biology is always fascinating BUT MOSTLY KITTY =^.^=
I've been in Hank's living room. It's like we're friends now.
Hank you are awesome. Great job with your Team on these videos. I appreciate your hard work in this crash course. Keep up the great work.
Chicks dig nerds that can dance? Ladies...
YES!!!!!!!!!!!!!!! Step 1: look good and step 2: know how to dance
Kyle Thum I'm 1 for 2, and it isn't the first one...
i'm mean, its not a lie so...
Thank you to Cameo for making a cameo
Hi. Great video!
Although I have a couple of comments.
First - I would say that the 2 main tasks in an animals life is Survival and Reproduction, where finding food is but one part of survival. In fact, I would boil it down to just one: Reproduction, as all other behaviors ultimately serves reproduction, and without it, no other traits will be passed on.
Second. You make the same mistake as many of my students: mixing up Tinbergens question 3 ( adaptive value) and 4 (evolutionary history). Your explanation for question 4 is actually an answer to question 3. An answer to question 4 could be something like: "Pheromones are used by many types of mammals and is likely to have evolved long ago... however, the specific sex pheromone used by this hamster is unique for this species, thus it is a fairly recent modification to the smell, possibly as a means to avoid interbreeding with other hamster species". In other words: question 4 asks to what extent the behavior could be explained as a a phylogenetic "leftover" from evolution acting on ancestors.
/Andreas (Lecturer in Ethology and Behavioral Ecology)
The History (or Phylogeny) - question has to do with the evolutionary past of the animal. One example is goosebumps - there is probably no Function for this in humans. But seeing how animals with their fur intact use the same reflex to fluff their coat when chilly, shows that the History explanation is key to understanding why humans have this behaviour.
ok boomer
What kind of cat is cameo? She is very fluffy :D
She is planning to eat hank
D'awww... Lemon and Cameo are so dang adorable... The video was awesome as well.
This was the first crashcourse episode I've watched and I just have to say that this is brilliant. Thank you very much.
your dog is so cute! I paid attention tho, i promise! :)
Your cat would make a great intro to random X inactivation and the tortoise shell / calico coat color!
I LOVE YOUR CAT!!! you're officially my favorite person!!!!! love the show :)
"The only two things that matter - eating and sex" is a rather sad statement...
My tennis coach abides by it
hasn't led me wrong yet!
Aw, Cameo. What a gorgeous cat!
Can't wait! I recently made a video about dreaming based on my own observations of earthlings. I wonder whether my hypotheses match with earthlings theories.
fastest way to feel old on the internet. rewatching the first crash course video you saw lol.
Suicide is very rare, when you think about it, and it was probably virtually unheard of during most of our evolution. It's hard to imagine a hunter-gatherer being depressed enough to take her life; she'd be too busy running from lions and the like. I'm guessing the selective pressure against suicide has simply been too low for evolution to do anything about it.
Mind you, lots of animals commit suicide for adaptive reasons, like honeybees, but that's a different story.
It's a Cameo cameo! and a Lemon cameo!
Hey, why does my kitten chase her tail? I'm scared she's going to get hurt becomes sometimes she does it on stairs and then falls down them which is adorable, but worrying.
Despite this being a very interesting episode, all I want to say is that Lemon and Cameo are so adorable
You make learning fun. I could literally listen to you all day. You rock...
Lemon, we miss you!
Taking this as a class in my next and final semester before earning a BS in Wildlife Conservation & Biology and this was a wonderful introduction / crash course. Thank you!
OMG! You have a greyhound
Why is your neck red? Hmmm
The way he acts with animals and insects is adorable LOL
Salaam to Hank Green. You are awesome teacher. One of my fav teacher. Thanks
Aw, Lemon and Cameo are so cute! :)
I was saying he was "scratching" an itch. You can't Itch and itch. Some people say it but it is a very informal way of saying it.
These behaviorists are using the archaic notions of the past Hank. I'm really glad you weeded out the instinct driven reasoning for animal behavior, but the focus on stimulus needs to be down played. Of course stimulus of the animals senses gives them the ability to understand their world their personality and emotional state are still the drivers to their behavior.
When we put the labels on a fluid system like animal life we are only making generalized assumptions. For example why do we call herbivores plant eaters when they all have been noted to eat animals as well. Cows on farms eat little kittens and chicks. White tailed deer eat fledgelings right out of nests and cats can live on a 70% corn diet. The preferences of animals as a species is a loose guideline on the individual level. So the actual individualistic differences of every animal are in fact the behavior controls.
Like the male hamster running to mate, do you realize you have to take in account all the males who smelled the pheromone and did not run to mate. Not taking a course of action is just as important as taking a course of action. I have devoted nearly all of my adult life to this subject and have found some very amazing research experiments along the way. Just the fact that animals have different personalities is more profound that most are realizing.
Darren Pellichino links to your research?
Hey, I understand this response is 3 years late, but any way you could recommend or link some of these research pieces/ experiments for people interested in this kind of thing?
CATS ARE AWESOME!!! That's really all I need to say, the show is awesome but everybody here should already know that.
Aaaaah Lemon... I am feeling all the feels...
I'm so glad you made an animal behavior video.. I'm gonna major in this!
Canadian Geese! I live a stones throw from the lack in my city and there are so many of them. They are also really loud!
If "animal behavior" is doing something that simply helps you survive and reproduce, then the definition of sentience is finding an activity more desirable than survival.
I'm so glad that I'm sentient.
What an adorable kitty! XD
Fantastic as always Hank!
Hank, I think you should talk about the relationships in which animals and plants need to live, a 'micro-world' if you will. especially those in the Galapagos islands and talk about how many external factors like the weather and sea temperatures play a crucial role in shaping said relationships.
Awwwwww! Dat kitty is so kyoooooot! Sorry - I'm helpless to anything fluffy.
Aah what to say.. Amazing videos.. Thanks a lot...
HELL YES I DIG NERDS WHO CAN LEARN DANCES
Love Crash Course!
Thanks for reminding me to feed my cat. Sometimes it's hard to tell if he's begging for some food or just being super affectionate because of how much he loves me. Now to wait a few minutes for him to barf up his tasty treats because he always eats too fast. *sigh*
Separate comment for this. Communication occurs where animals transfer information, not necessarily talking, humans also use body language, tone and writing as well as speech. Animal communication could be codified into a 'language' e.g. ground squirrel signals for different predators. If directed communication is required then animals will be physically able to, if not then they won't. It's not that they're stupid, just that they don't need to, we're not weak because we can't lift tree trunks.
I would just like to state my appreciation for the increase in the cute animal quota.
A Cameo cameo! Those are the best!
Aw little Lemon in the background! :D Hallo, herpaderpapotomus!
I believe in the first episode, he defined Biology as being 'all about sex and not dying.'
As a stop-gap until these videos are made, I may be able to help. There isn't much of a 'hive-mind' for the cooperative breeders such as the Hymenoptera (Bees, ants, and the like). If you're interested, look into the evolution of emergent behaviours. Each ant works to do what it's own impulses tell it to do and when you look at the colony it seems as though the whole thing is working together (Same thing with flocks of birds flying in unison). So yeah, emergent properties, not hive mind.
Loving your video was very useful for my veterinary technician studies :) thanks!
No, you can do anything you want, Marty, you are an awesome human being.
Been subscribed since episode one, but this is the first episode I've seen. It wasn't bad
Regarding Bower Birds, many would argue that they do not collect garbage, but aggregate piles of trinkets with specific and unifying aesthetic characteristics. lol
Such a beautiful cat.
Bower birds?
wait for it ... BECKY, LEMME SMASH!
Most dogs aren't latched in their crates very often, and there are a lot of benefits to having one. First, it gives the dog a place where they can go if they feel stressed. Second, it's a convenient place for a bed, which also ties in with making the animal feel comfortable. Thirdly, if there's an emergency or a dangerous situation, you can put them in their crate and latch them in there until everything's been dealt with. For instance, it's really useful if you need to clean up broken glass.
Just the visual of hamster skiddaling in preparation for boot knocking was the worth the price of admission to this video
1:12 Can we just accept the fact that the dog simply looks depressed
What is the difference between Morphology and anatomy?
his cat is da*n awesome!
Haha i cant remember :P
You helped me so much on the AP bio exam. You don't even know.
So Thanks!
awww cameo :)
Oh, sorry, I see how that sounded confusing. Radiation is the geographic spread and genetic divergence of a species into many lineages. Human radiation was very rapid (we went worldwide within 100,000 years), so we haven't had time to develop much genetic divergence. :)
The reason for Hymenoptera being so altruistic is that they are haplodiploidy which means the determine sex by either being a fertilised egg or an unfertilised one which gives females twice the genetic information of a male, it also makes them more related to their sisters (All workers are female) than to their potential children. This makes it very beneficial to help sisters and is the reason they are communal and social insects. So that explains why they are altruistic.
And that is why this word --> "Plasticity" has the word plastic in it. It means the ability for the brain to change. Certain brain structures produce certain actions. Ex: So if an animal has a small hippocampal region, it probably wont remember very well, so it would go off exploring, forget its way back, and die.
Thanks Hank! You're a better teacher than my university lecturer
yaaaaaaaaaaaaaaaaay!! thank you so much for doing a video on behavior :)
It's a Cameo cameo! :D
+Melinda Meyer =D
Interesting video that makes this area simple and relevant
I also knew a long-haired tortoiseshell called Cameo that deserved constant attention.
Let's just say if she finds a long-lost sister called Bloomer, Bloomer is gonna be pissed.
Gracias por este excelente material de apoyo para docentes! que bueno poder trabajar en versiones subtituladas al español. Un abrazo desde Colombia
Thank you to Cameo for the cameo
Hank, you're the reason i'm going to get a good grade in biology
Thanks I'll look into that. There are behaviours in colonies, though, that lie outside self-interest and I think are unique to hives, aren't there? I'm thinking:
1) Responding to pheromones that other ants are under attack.
2) When they form this lattice of ants and somehow decide where they are going to make their next home.
3) How you can end up with the different roles the ants in a colony have
4) Bees dying to sting a threat
I'd also love to know what hive animals' non-hive ancestors were.
This is really great. I'm doing an essay on ethology and this will help so much.
YES!!!! I study animal behavior for fun, so this was awesome!!!
Kudos to all the ladies promoting intelligence as an evolutionary trait!
Cameo reminds me of my cat Misty. :) Both are adorable.
More videos with cats in them! More!
Watching you not give that cat a treat for ten minutes was one of the most agonizing things I have ever endured.
You should talk about connectomes!
Please talk more about altruism in animal behavior. what about emotions in animals?
(3) is a bit difficult too, essentially, it's better to have lots of specialists rather than a few generalists. If you make some ants very good at fighting and some very good at nest building, you have a hive greater than the sum of it's parts. Lastly, sawflies are Hymenoptera and are not that social so that would be a living example of a more primitive group, also Bumblebees are an example between sawflies and the other Hymenoptera. Hope this helps, sorry for the essay.
Cameo is like my grandmother's late cat, Piika. Bless, she looked so much like Cameo... it's odd now since Piika's gone.
Crash Course videos are pretty scheduled as to their content. I'd ask the SciShow channel about a Lucid Dreaming video
When you said "I know that much" was it with a knowing and not-quite-contained chuckle?
Yes, it does at some level. Of course we humans have a waaaaay more complex social environment and we developed symbolic language, but selection worked (and still woks) for us as it does for the other species.
the evolutionary advantage is on having different kinds of muscles in different places. so for instance leg meat on a chicken gets more use than the wings which are used for only short busts of flight so the legs have more myoglobin making them darker, other birds such as geese have dark breast meat.
most animals dont try to be tasty they just need muscles and other animals who like to eat meat for energy and protein think they taste great (while herbivores might find it disgusting)
Maybe it's so that for example we keep eating if there's food available in case there will be a food shortage later and we need the extra fat? And we want more stuff to help us make more prepared for future problems. And to make our nests comfier because comfy is nice. And possibly also to impress other members of our pack and improve our social standing. And generally we're just curious creatures (something to do with the intelligence) and like to collect interesting stuff.
Awesome Video and humorous.
Yay ethology. I would have enjoyed a brief discussion of human behavior and what is and isn't adaptive but I appreciate the limitation of time. Maybe in another ep?
Thank youuuuu