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5
votes
2answers
1k views

Why does the bunny have a white butt?

There are several species of plant eaters that have a very visible bright white behind: several kinds of deer, rabbits, antelopes, etc. Does this white spot have any function to it, or is it purely ...
3
votes
1answer
119 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 ...
4
votes
2answers
83 views

Are there special constants in biology that define organism's morphology?

In math, there are special numbers, like Pi (3.14159...) and e (2.71828...). In chemistry, there's numbers like avogadro's number (6.0221413e+23). For example a circle can be defined in terms of 2 * ...
16
votes
3answers
1k views

Do animals exist with an uneven total number of digits?

I recently finished reading Contact by Carl Sagan. In the book they talk about a pattern in the transcendental number like pi or e, and comment that it is found in base 10 or however many fingers the ...
6
votes
2answers
137 views

Can any species be bred selectively/engineered to become as diverse looking as dogs?

I've done some research and it appears that dogs are the most diverse looking single species of mammals. The questions that interest me is - are dogs special in respect to genes/gene activation ...