Around 3,500 moose now wander Colorado. The hungry herbivores are also threatening a once-wetland-rich valley in Rocky ...

"Folks should enjoy the opportunity." Researchers thrilled after trail cameras capture 'incredibly rare' footage of wild ...

At 75 years old, Wisdom the albatross has outlived her mates, survived tsunamis, raised dozens of chicks, and is still ...

Male bonobos can decipher females' unreliable fertility signals, allowing them to focus their efforts on matings with the ...

Don't let the chill of winter fool you — it is actually one of the most active times of year for countless species across ...

Humans are far closer to meerkats and beavers for levels of exclusive mating than we are to most of our primate cousins, ...

Not all animals are as friendly as they seem. Some may look harmless but can turn aggressive in an instant, while others ...

"They’re pumped full of testosterone, bugling like crazy, and sometimes charging anything that looks like a threat." Tourist ...

A study reveals how seabream change sex and why some males invest more sperm, rewriting the hidden biology of these fish.

Male bonobos are able to interpret female fertility cues even when those signals do not reliably indicate ovulation. This ability helps them direct their mating efforts toward times when conception is ...

SIERRA VISTA — After 25 years of hard work and determination, the mountains of southern Arizona are teeming with turkeys once again. The Gould’s wild turkey has, since 1983, been the center of an ...

Bringing down an elk, buffalo or musk ox, let alone a human, does not present much of a challenge. Luckily, they tend to ...