Add Yahoo as a preferred source to see more of our stories on Google. A study out of Japan showed how targeting genes can regrow teeth in animals. Now, the team has turned to a human clinical trial.

How do you find out the age of a wild animal? For some Australian marsupials, we have discovered you can tell from their teeth. In a new paper published in Archives of Oral Biology, we show that the ...

Scientists discovered true teeth growing on the head of the spotted ratfish, a distant shark relative. The toothed structure, called a tenaculum, helps males hold onto females during mating. Genetic ...

University of Washington scientists have made a remarkable discovery: real teeth growing on the forehead of a deep-sea ratfish. This finding sheds light on the unique adaptations in fish anatomy, ...

To say spotted ratfish are unusual is an understatement. Related to sharks, they abound in the inky dark depths of the Puget Sound. Armed with a venomous fin, they swim gracefully along the sea floor ...