Dog breeds that are especially vulnerable include various types of terriers, boxers and bulldogs; in cats, it’s Persians, ...

Cats sniff unknown humans more than their owners, showing a side preference in their nostrils that hints at brain lateralization. Bold cats sniff strangers first, shy ones start with familiar ...

Male fertility is on a decline worldwide—and cat poop might have something to do with it. New research suggests that ...

Toxoplasma gondii, a parasite spread by cats, can shred human sperm and may be an overlooked factor in declining male ...