Comet 67p/Churyumov-Gerasimenko — Comet CG or Comet 67P for short — streaks through space at 135,000 km/h (38 km/s; 84,000 mph), orbiting around the Sun sometimes further than Mars and ...

When I get home at the end of the day, I am greeted by 35 pounds of bouncing fur and three tails wagging a mile a minute. After lots of rubs and kisses, my three Havanese dogs settle down for a ...

Humans’ closest primate relatives lost their tails about 25 million years ago, but exactly how has remained a mystery. A breakthrough in genetic research may finally offer answers.

Small reptiles like lizards and geckos are known for their extraordinary ability to regrow their tails, a potentially lifesaving skill in the wild. But it turns out these reptiles are not the only ...

WASHINGTON — Our very ancient animal ancestors had tails. Why don’t we? Somewhere around 20 million or 25 million years ago, when apes diverged from monkeys, our branch of the tree of life ...

To understand how apes and humans lost their tail, Mr. Xia looked at how the tail forms in other animals. In the early stages of an embryo’s development, a set of master genes switch on ...

The tails of most dogs, for example, hang down near their hocks, or heels. But pugs have tails that curl upward, and greyhounds have tails that rest slightly between their legs.

Alligators can regrow severed tails, surprising scientists. Young alligators can grow back up to 9 inches of a lost tail, a study finds. They’re the largest animal with this regenerative ability.

Our feline friends say a lot with their body language. Here's why cats wag their tails, according to an expert. Cats are mysterious little creatures, known for leaving even the most devoted pet ...