The biological study of animals.

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Can anyone identify the worm in this video clip?

My wife came across this youtube clip of a spider and a worm. Can anyone identify at least the phylum?
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68 views

What insect is this on the photos?

What insect is this on these photos? Found in Russia in the living room.
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1answer
101 views

To what extent do domestic animals understand language?

Note: Please tell me to re-post this in Cogsci or pets if this doesn't belong here. Hello All, I want to know how dogs or other domesticated animals differentiate between normal chat and a command. ...
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1answer
79 views

Do cockroaches eat their shells after moulting?

I recently witnessed a cockroach eat its shell after it moulted. Do cockroaches always do this?
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60 views

Diet of free-range herbivores

Giving minimal credence to estimates in popular media of the average biomass of insects/arachnids, etc. in an acre of land, it seems that a "free-range" cow (I don't mean to pick on cows) might be ...
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40 views

Detailed mechanism of the cause of diabetes mellitus type 1?

I have read in some texts that diabetes mellitus type 1 is caused by degeneration of beta cells due to our body's own immune reaction.Is it true? Can you explain further how are such types of immune ...
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46 views

Why did many odd-toed ungulates become extinct?

There were a lot of odd-toed ungulate animals in the ancient times but now just few of them survived. What is the reason for that?
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95 views

What is the scientific and common name of this bug?

Captured this under my stereo microscope. Much beautiful than appearing on my camera sensor. Can someone help me identify it and explore more? Also is it having a compound eye ?
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70 views

Leaves not liked by herbivores

I at times have many goats grazing in our locality. Recently a few cows were seen too. I just offered one of the cows a few leaves from Jasminum sambac plant growing in our garden. The cow smelled and ...
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1k views

Why do humans seem so much more prone to disease than animals? [closed]

It seems like when we observe animals in the wild, the occurrence of noticeable disease in adult individuals is much lower than in humans. Why? There are a number of reasons that this could happen, ...
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836 views

List of Asymmetric Animals

The (male) Fiddler Crab is a famous example of an animal whose morphology exhibits neither mirror nor radial symmetry: (Image source) List of animals featuring external asymmetry is a Wikipedia ...
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96 views

translation of scientific names [closed]

I am trying to determine the "translated" meanings (not seeking the common names) of different insects, (presently some bees and wasps). Does anyone know of a printed or internet resource that ...
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1answer
325 views

What are the visual, behavioral similarities and differences between Yellow Fever Mosquito (Aedes aegypti) and the Tiger Mosquito (Aedes albopictus)?

The Tiger and Yellow Fever Mosquito visually look very similar. Recognizing the difference is important for tracking and controlling the spread of Yellow Fever, Dengue fever and other diseases. ...
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563 views

Excretion of various wastes and water requirement

A common fact is that Ammonia, Urea and Uric acid are the most common excreted metabolites and their removal needs varying amount of water, highest for ammonia (hence suited only for aquatic animals) ...
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1k views

Do bigger animals have more testosterone?

I was wondering the other day outside, thinking about varieties of species and their aggression levels, etc. I had a theory that since these highly aggressive, powerful, and viciously advantageous ...
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1answer
358 views

How do pet gecko lizards pose a health risk?

Does having gecko lizards living in your house pose any health risk?
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1answer
149 views

By What Mechanism can Felines Reverse Diabetes?

To my knowledge house cats (and likely other felines) are the only animal able to go into remission after onset of Type 2 diabetes mellitus. I don't have a reference, this has been by peers in my ...
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1answer
361 views

What marine animals exhibit deep hibernation/aestivation?

Do marine animals exhibit deep hibernation/aestivation as land-based creatures do? If not, Why?
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1answer
92 views

Reattaching body parts

Is there any living organism that has the ability to remove and reattach body parts at will? I'm not talking about regeneration (like in starfish). Say I'm chasing prey, and I decide that my tail ...
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1answer
41 views

Animal identification (larva)

I found a tiny, white animal in my mouth on the morning of June 28, 2015, in Toronto, Ontario. Luckily I don't seem to have hurt it. I was eating some sunflower and pumpkin seeds at the time. I ...
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1answer
31 views

Cysticercoids of Eucestoda

I have found the following pictures representing cysticercoids of Eucestoda. If I correctly understand the right part of the picture, I would say that the development of the scolex is portrayed on ...
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1answer
106 views

Why do chameleons move back and forth?

I was always curious, why do chameleons have this strange gait?
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1answer
52 views

What kind of animal can do this?

When I was moving to another house, I found this plastic bag on the top of the cabinet of my old house. It looks like someone cut it all with a scissor, but no one have access to my bedroom, and it ...
2
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1answer
72 views

Book-recommendation: Ethology

I am looking for a book that covers the following topics in ethology: Behaviour Sensory filtering, reponsive-ness, sign stimuli, learning and memory, instinct, habituation, conditioning, ...
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1answer
115 views

Can foxes move their ears independently?

I've read that dogs can do move their ears independently, i.e., point one ear in the direction of a sound without having to point the other one at the same time. Is this a common trait with other ...
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1answer
80 views

Which of the following demonstrates the pattern of development in Greylag Geese?

Which of the following demonstrates the pattern of development in Greylag Geese? {Please give specific answers, which among the following gives the best available demonstration?, If needed, have a ...
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1answer
97 views

Why are some scorpion species fluorescent under UV light?

It's known for some scorpion species such as Pandinus imperator, Heterometrus Petersii etc. to be shining under UV light. That makes them easier to capture and collect by humans. Is there any ...
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2answers
67 views

Maintaining purebred pedigrees and how to lessen chance of getting disease?

Many breeds of dogs are known for a high incidence of genetic disorders. German shepherd and Saint Bernard dogs are predisposed to developing a crippling condition called hip dysplasia. Q: What ...
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1answer
54 views

Can a chicken's lard become liquid depending on its diet?

On Cooking.se, somebody asked a question about the fat in chicken stock sometimes being liquid and sometimes solid once the stock has cooled. The only answer until now suggests that the difference is ...
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2answers
669 views

Do primates other than humans have a consistent sleep schedule?

I'm doing some sleep research and would like to compare a human sleep pattern as recorded by a wrist-based actigraph with a "natural" sleep pattern, such as from apes. In an experiment like that, a ...
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1answer
123 views

Is there an instinct-driven body language for birds?

Over the last year or so, I've been observing house sparrows, because they are so prevalent in the northeast US cities. I noticed that a lot of sparrows, even in different cities seem to have very ...
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2answers
53 views

What do breeders call the effect when a breed resists modification?

It is impossible to breed a blue rose or a cat with a bulldog shape. This is because breeding is limited by gene variations in the population. What do breeders call this effect? UPDATE I guess ...
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22 views

Do animals commit suicide? [duplicate]

Do we have documented cases of animals purposely and consciously trying to end their own life? What leads to animal suicide, and is it preventable? I've heard mixed answers from various biologists. ...
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37 views

Best tail for swimming?

I understand that the vertical tails of fish and the horizontal flukes of cetaceans evolved due to the spinal movements of their ancestors but I was just wondering which was the most efficient for ...
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65 views

How did birds become so intelligent?

I have seen a Discovery Channel video of a bird throwing stones in a pot to raise the water level so it is able to reach and drink it. A similar experiment in this paper from Current Biology shows ...
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0answers
47 views

What fraction of biomass is cultivated by humans? Have we increased the number of large animals?

What fraction of "large animals" are domesticated by humans, compared to those who are wild? I mean cows, pigs, sheep, horses, dogs, cats in relation to comparable wild animals. Different measurements ...
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56 views

How did the roar evolve from snort?

When Lions roar, or Dogs show aggression, they do that snort-roar thing. They're producing sound while inhaling. How did that come to be when all (?) other forms of sound involve exhaling? Humans do ...
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72 views

Organisms with the most extreme sensory capabilities? (sight, smell, sound) [closed]

Background It is quite mind boggling to imagine what it would be like to be missing sight, sound, touch, smell, taste etc. Question Which organism holds the record for most extreme sensory ...
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44 views

What's behind the amazing colour combinations in pests & insects?

What's behind the amazing colour combinations in pests & insects ? Do this colour combination signals any character/ poison of the pest/insect ?
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0answers
73 views

Where are the gastralia (stomach ribs) attached?

Crocodiles and some dinosaurs have a second set of ribs between the sternum and pelvis called gastralia. Where are the gastralia attached to the rest of the skeleton?
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114 views

Green feather-like formations in tap water - what is it? (with pictures)

These things recently appeared in my tap water Copenhagen Denmark, this summer 2013. They are very small, and have a feather like structure. I've called the water supply, and they thought that it was ...
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0answers
23 views

Living organisms with properties similar to both plants and animals? [duplicate]

Is there any example of currently living organisms that shows close resemblance to both being a plant and an animal? What is the plant with the closest possible resemblance to animals, and What is ...
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0answers
29 views

Where might I find a list of all recorded instincts by species? [closed]

Where might I find a list of all recorded instincts (possibly with all other attributes) by species? Thanks, Chenz
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2answers
437 views

Did cats evolve from monkeys ? or vice versa?

Did cats evolve from monkeys ? or vice versa ? How similar are the genes of cats and monkeys ? What is the proof that they are related or that they are not related ? Most monkeys climb in trees and ...
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3answers
306 views

What flying insect is this?

Found in Russia. Approx. 7 cm.
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3answers
216 views

Are domesticated animals really “more intelligent,” or is that a myth/misunderstanding?

Often do I hear people speaking of how the domestic house cats are more friendly, less ferocious, less savage-like, and smarter and/or than their distinct but equivalent feline-species friends, like ...
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2answers
350 views

Do any cells change in size or mass as mammals grow?

That is to say, are there cells that, between infancy and adulthood, get larger? Or is all growth done entirely via cell division? I'm wondering if it is safe to assume that the approximate number ...
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2answers
57 views

Mosquito physics

What are the environmental limitations of mosquitos I should know of if I want to avoid getting bitten? For example: How fast should I walk in order to be moving too fast for one to bite me? Can a ...
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1answer
58 views

Why are Oxyuranus snake species named Taipan?

It is interesting, why are Oxyuranus species called Taipan. The snakes are Australian but taipan looks like of Chinese origin word (it means big shot - important person).
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54 views

Consuming animals by slaughtering vs injecting barbiturates?

In "Least painful way to die" we get an answer ... Companion animals (e.g., dogs and cats): injected barbiturates are recommended Laboratory animals (e.g., mice and rats): injected ...