A prehistoric jet black river creature with shark-like teeth has been caught in the Choctawhatchee River in Florida. The melanistic longnose gar was found by the Fish and Wildlife Research Institute ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to curiouskidsus@theconversation.com. Why do people have two sets of teeth? – Ivy D., ...

In the history of teeth, perhaps no tooth is as famous as the saber tooth. These long, blade-like canines seem almost perfectly optimized to kill prey. They've evolved at least five times in mammals, ...