A large-scale analysis of 117 mammal species found that preventing reproduction is associated with longer lifespans, suggesting a strong link between reproductive activity and life expectancy. Why do ...

A common parasite expands across species by abandoning sex, boosting short-term spread while risking long-term collapse.

For a small number of animals, reproduction marks a biological endpoint rather than a stage in an ongoing life cycle. Death ...

Side-blotched lizards probably don’t call the game that, but they play a version of it anyway. A new study explains the ...

Most animals reach an adult size, then spend the rest of their lives maintaining it. After maturity, their energy goes toward ...

Find out which animals live the longest and what clues this gives us for potentially slowing down human aging.

The origins of consciousness date back about 540 million years ago, when animal bodies became more complex. Feelings like ...

Trap-Neuter-Return (TNR) programs have been shown to be an effective solution to feral cat populations. Learn more.

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

BAYAHIBE, Dominican Republic (AP) — Oxygen tank strapped to his back, Michael del Rosario moves his fins delicately as he glides along an underwater nursery just off the Dominican Republic coast, ...