Laughter is universal among humans. Researchers have found that our closest relatives, apes, also laugh, and do it with a ...

Baboons are one of the most widespread of Africa's primate groups. They range across sub-Saharan Africa and into the Arabian ...

Roy, Silo and Tango and Pilchard and Maynard show that diversity in family and social relationships is hardly unique to ...

A new protein analysis of Homo naledi skeletons reveals a curious twist—none of them seem to have Y chromosomes.

I'm officially ~on the prowl~ for the best deals on cat litter, toys, cleaning essentials, and other purr-ractical purchases — and these are worth pouncing on.

Seven house wren chicks have hatched, transforming a backyard nest into a scene of nonstop feeding, fierce nest defense and ...

There is a story I keep coming back to. It happened on the other side of the country, yet it feels like it belongs to our own ...

Degrees and chromosomes are among the surest predictors of how Americans vote. Why? The answer has high stakes for colleges.

A fascinating new study has revealed that female chickadees are very fussy when it comes to selecting a father for their ...

Since it’s Pride Month, I was curious about whether dogs or cats can be gay, or can demonstrate same-sex preference. What ...

Wondering how many eggs an African Grey parrot lays? Learn about clutch size, incubation period, egg-laying health tips, and ...

In Second Nature, scientists theorize that Darwin couldn’t help but impose his own heterosexual ideations on animal reproduction, mainly that animals only copulate for the purposes of reproduction, ...