[eli5] Why do insects have lots of legs while larger animals have 4 or 2? Also, why aren’t there any animals (that I know of) with 3 legs?

Question

[eli5] Why do insects have lots of legs while larger animals have 4 or 2? Also, why aren’t there any animals (that I know of) with 3 legs?

In: 381

Answer 1

Fun fact: kangaroos have 3 legs, in that their tail bares weight and contributes to balance in the same way a leg does (unless you count their front legs, in which case they have 5 legs)