Proteins degrade over time, making their history hard to study. But new research has uncovered ancient proteins in the enamel ...

You may know them as Alvin’s little friends who love to sing in the movie Alvin and the Chipmunks, but in reality, chipmunks really love to chirp and use their harmony to communicate with each other.

Researchers have sequenced proteins from an ancient rhino relative from the cold, dry Haughton crater site (shown) in the ...

In prehistoric communities across what is now northeastern Europe, decorative ornaments with animal teeth were a regular cultural practice. These decorative ornaments that have been dug up in ...

As far as vertebrates go, sharks are among the toothiest. Whale sharks, which may be big but are hardly alpha predators, can have more than 3,000 teeth, but they are only the size of a tear drop.Great ...

Dogs have 20 teeth in their maxilla (upper jaw) and 22 teeth in their mandible (lower jaw). Dogs have 12 incisors, 6 on the top and 6 on the bottom, which they use for grasping objects such as ...

Sensory features on the armored exoskeletons of ancient fish may be the reason why humans have teeth that are sensitive to cold and other extremes. CNN values your feedback 1.

Only vertebrate animals have real teeth, though some invertebrates have hard tooth-like plates they use to eat. One of the earliest creatures with teeth were conodonts, an eel-like creature that first ...