DOGS OF THE SEA

Dolphins are sometimes thought of as the “dogs of the sea” because they are usually playful and friendly. They’re also among the smartest animals on Earth. Dolphins are water mammals. Scientists believe they’re as smart as chimpanzees or dogs. They live in rivers and oceans, but they must come up sometimes to breathe air.

Most dolphins are grey or black. Some live in small groups, some live in large groups. They eat fish. They sometimes die when they become trapped in fishing nets. We must help them survive.