While the average person has 32 teeth, some species of dolphin possess as many as 240. Why so many? Not all species are quite so lucky – Risso’s dolphins only have four to 14 in their lower jaw.

For example, our knowledge of Megalodon's existence comes from the fossil record, which reveals teeth designed for hunting dolphins and whales. These teeth occur in the fossil record between 15 ...

The dolphin’s numerous pairs of teeth help make it one of the top predators of the Amazon. Amazon river dolphins are unique in having molar-like teeth at the back of the jaw for crushing their prey.

What emerged was the head of a dolphin about 30 centimeters long, which had 4-cm-long ear bones, eye and nose sockets, teeth and other skull parts. Because dolphins use ultrasonic waves to sense ...