Cutting off reproduction — from birth control to castration — consistently adds years to life across species, even humans.

American zoologist Laurie Marker has been collecting and storing specimens in a cheetah sperm bank in Namibia for 35 years, ...

Animal mothers exhibit remarkable resilience and ingenuity when raising large litters. Species like the tailless tenrec and ...

In the largest study of its kind, scientists have accurately documented the massive change in animal morphology over the last 1,000 years, with domesticated animals growing larger across the board and ...

Nature pulls off some amazing surprises when it comes to reproduction, especially among animals that produce massive broods ...