Dolphins are mammals found in the sea and are part of the toothed whale family. They are grey with backs that are darker than the rest of their bodies. More »

Dolphins sleep by a process called unihemispheric slow-wave sleep. This kind of sleep is believed to help dolphins and other creatures recover from their daily activities. More »

All dolphins have conical teeth that are used for biting and trapping prey, such as crustaceans and fish, but are not used for chewing. Dolphins swallow their prey whole. Dolphins fall into the odontoceti, or "toothed wh... More »

www.reference.com Pets & Animals Marine Life

Dolphins are mammals because they have all of the major characteristics of mammals; they breathe through lungs, they are warm-blooded, they produce milk for their offspring and they have hair. There is also evolutionary ... More »

Sharks actually attack dolphins on occasion, but sharks are wary of them because dolphins have excellent detection skills in the water, are highly intelligent, attack in groups and occasionally protect other mammals incl... More »

Dolphins hear when the sounds in the water bounce off the dolphin's jaw bone into the middle ear. Dolphins can hear far better than humans and their hearing is even better than that of dogs. More »

All dolphins have conical teeth that are used for biting and trapping prey, such as crustaceans and fish, but are not used for chewing. Dolphins swallow their prey whole. Dolphins fall into the odontoceti, or "toothed wh... More »

www.reference.com Pets & Animals Marine Life