"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." While dogs and cats are genetically unrelated, breeding for certain features is making some dog and cat ...

Why does your dog rush to "help" when you are searching for something, while your cat seems… eh, less concerned? New research suggests that this difference may stem from deep evolutionary roots—and ...

Learn how dogs, cats, and toddlers were tested for spontaneous helping behavior — and why evolution may explain why most dogs tried to help while cats rarely did.

ITHACA, N.Y. – Through intensive breeding, humans have pushed breeds such as pug dogs and Persian cats to evolve with very similar skulls and “smushed” faces, so they’re more similar to each other ...

Dogs often help humans like toddlers do, while cats tend to stay independent. Researchers say evolution may explain the differences.

Through intensive breeding, humans have pushed breeds such as pug dogs and Persian cats to evolve with very similar skulls and "smushed" faces, so they're more similar to each other than they are to ...