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1 vote
4 answers
148 views

How useful (if at all) would these extra arms be?

5 votes
6 answers
586 views

Ice Dragon Breath

19 votes
3 answers
2k views

How could an Earth-like planet develop huge pinkish-purple forests on ocean surfaces?

6 votes
3 answers
265 views

The biology of hybridized scale-feathers

-1 votes
0 answers
135 views

How fast would an animal moving like a propeller go?

7 votes
6 answers
2k views

Why would humans domesticate an omnivorous species that has human-level intelligence, varying sizes, and a longer lifespan than humans themselves?

9 votes
4 answers
1k views

What would the advantages or disadvantages of being a swordfighter with digitigrade legs and a tail?

4 votes
1 answer
140 views

How could creatures get oxygen in a brine pool?

-3 votes
1 answer
209 views

Could a hydrophobic animal that drinks petroleum evolve on a desert planet?

13 votes
4 answers
2k views

What is the maximum size of a gliding animal?

6 votes
5 answers
2k views

Strong and shiny biological material

7 votes
1 answer
179 views

Can a tetrapod grow based on an external framework?

21 votes
4 answers
1k views

Physiological adaptation of life on a planet orbiting a red giant.

5 votes
1 answer
254 views

Could a fish use jet propulsion-like movement?

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