Pumpkin the capybara is proudly showing off her big chompers — and there’s a cool reason behind them. As the largest rodent in the world, Capybara teeth never stop growing. Instead of constant gnawing ...

Two fossil teeth from a distant relative of North American gophers have scientists rethinking how some mammals reached the Caribbean Islands. The teeth, excavated in northwest Puerto Rico, belong to a ...

Chattering squirrels, charming coypus, and tail-slapping beavers -- along with some other rodents -- have orange-brown front teeth. Researchers have produced high-resolution images of rodent incisors, ...

Two fossil teeth from a distant relative of North American gophers have scientists rethinking how some mammals reached the Caribbean Islands. Two fossil teeth from a distant relative of North American ...