The stakes are clear. Experts celebrate as endangered creatures see stunning recovery: 'Successful reproduction' first ...

Many mountain gorillas keep living - vigorous and socially engaged - for a decade or more beyond the years of reproduction.

Animal reproduction and breeding encompasses the full spectrum of natural, assisted and genetic processes that underpin the perpetuation, improvement and conservation of species across diverse taxa.

"Migratory animals are the planet’s early-warning system." New research uncovers troubling findings about migratory animals: ...

The epigenetic clock measures biological age and could help scientists assess the health of polar bears, dolphins, baboons ...

What are some animals that give birth to huge numbers of offspring at once?” (Watch a female sea urchin produce millions of eggs.) The mola, or ocean sunfish, looks like an animal cracker someone bit ...

No one was hurt, but park rangers later confirmed the elk's behavior stemmed from repeated exposure to people — a clear sign ...

As wild burro populations grow, they're putting native vegetation at risk, a new study shows, including the saguaro cactus.

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 ...