If you've ever wondered why the rabbits in your garden aren't as big as horses, wonder no more. According to a team of scientists led by Kyoto University's Primate Research Institute, competition with ...

Add Yahoo as a preferred source to see more of our stories on Google. Some rabbits are tiny little marshmallow puffs you could tuck into a hoodie pocket and forget about until snack time. And then ...

Why don't we see rabbits rivaling the sizes of horses? Researchers investigated the fossil record and evolutionary history to report that larger herbivore competitors were one evolutionary constraint ...