You probably don’t think much about teeth until a dentist brings them up. But across the animal kingdom, tooth counts can get wild fast. Some sharks go through thousands in a lifetime. Slugs carry ...

Add Yahoo as a preferred source to see more of our stories on Google. A CT scan of the tooth-like odontode structure from Astrapsis, an ancient jawless vertebrate fish shows that its tubules (shown in ...

While humans only have 2 sets of teeth in a lifetime, some members of the animal kingdom have a rare tooth-regenerating ability. Certain species can replace broken or lost teeth multiple times ...

Llamas are cute, but what makes them even better human companions is their gentleness and empathy. People from their native habitat, the Andes Mountains in South America, dub them “silent brothers”.

Can we examine the teeth of living fish and other vertebrates in detail, repeatedly over time, without harming them? Previously, small animals often had to be euthanized to obtain precise information, ...

The animal kingdom is no stranger to astonishing abilities, including the remarkable power to regenerate lost or damaged body parts. Among these traits, the ability to regrow teeth stands out as both ...