Does my dog suffer because it never has sex? And: Should I have it neutered to make it feel better? The topic of sexual frustration in dogs is emotional, often misunderstood—and full of myths. PETBOOK ...

Playing dead isn't the ultimate ghosting technique. Frogs use "tonic immobility" as a strategy to stay alive during mating ...

Discover the bizarre facts and fiction about the Virginia opossum's incredible symmetrical reproductive system.

This article was reviewed by Dr. Sarah J. Wooten, DVM, CVJ. Key points Spaying and neutering can benefit your dog’s long-term health and reduce pet overpopulation … ...

Some animals reproduce only once before dying. This life strategy, called semelparity, sees organisms channel all energy into ...

About 3 to 5% of mammals are known to be monogamous, meaning they select one mate for life. Still, many monogamous species ...

Trina Moyles' book "Black Bear" is a story of grief and a vision of peaceful coexistence that captures the fragility of our ...

As young people take on a messy dating landscape, they’ve created their own lexicon to match. Here’s like what phrases ‘bird theory’ and ‘monkey branching’ mean ...

Residents are concerned as a rise in coyote sightings across Southern California has left them concerned for the safety of ...

Most people think of moths as small insects fluttering across porch lights, but some species greatly challenge that image.

Each day, Times Insider editors scour the newspaper for the most interesting facts to appear on our pages. This year, tidbits about plastic recycling, whale sharks and crab Rangoon enlightened and ...

A new line of research has revealed a surprising finding about how the presence of wolves helps keep people safe.