The smiling one was dubbed Coronodon newtonorum ... Today, sperm whales use their soda-can size teeth. Larger whales, like blue whales, don't have have teeth; they filter-feed with the coarse ...

The sheer size of its teeth—some measuring over a foot long—immediately set Livyatan apart from any known whale, past or present. Unlike the toothless filter-feeders we see today, this whale ...

A new study on whale sharks reveals the existence of tiny teeth-like structures covering the eyes. These features are thought to be used as protection against abrasion, acting as a layer of armor.

The small, large-eyed baleen whale used a fully developed set of teeth to hunt its prey. Scientists had thought that two groups of ancient whales evolved drastically different eating habits more than ...