General Info CETACEAN TRIVIA Smallest: The Vaquita, a small Mexican porpoise, is only 4 feet long! Rarest: The Baiji, Chinese River Dolphin, numbers less than 150 animals. Largest Stranding: Over 700 False Killer Whales washed up on the coast of Argentina. Most Bizarre: Male Narwhals have a tooth that looks like a huge horn. Strap-Toothed Whales are a little known species whose teeth grow up and over the upper jaw!

There are 65 species of toothed whales, which include all dolphins and porpoises, the killer whale, the sperm whale, the beluga (or white whale), and several other species. They are smaller on average than their baleen cousins. The largest toothed whale is the sperm whale, with males measuring up to 68 feet long. Most dolphins and porpoises are less than 10 feet long, but the largest dolphin is the killer whale, which measures up to 30 feet long! Toothed whales eat mostly fish and squid, but killer whales can also eat seals and other marine mammals. Toothed whales are generally more social than baleen whales. A group of whales, called a 'pod', number over 1000 animals in some species of dolphins. Baleen whales are rarely observed in groups of more than five or six. Toothed whale pods are also more stable than baleen whale groups. For instance, killer whales form permanent pods containing mature females and only a few males. Other males form separate 'bachelor' pods. Toothed whales live all over the world in every type of marine habitat. They range from cold Antarctic waters, where the beautiful black and white hourglass dolphin lives, to the warm and fresh waters of the Amazon River, where one of the strangest species, the Inia (the Pink River dolphin), makes its home. The variety of habitats is as wide spread as any group of terrestrial mammals.