james lucey's List: animals with backbones

• The seals are marine mammals. The seal family includes the seal, sea   lion and the walrus.
• Seals are well designed to swim in water. Their bodies are very streamlined   and their flippers propel them quickly through the water.
• But they are clumsy and move slowly on land using their flippers.
• Baby seals are born on land after a long, 12 month gestation period.
• Walruses differ from seals in that they are larger and have large tusks.   They can be over 10 feet long and over 3,000 pounds.

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• Although they live in the water -- whales, dolphins and porpoises are   mammals.
• Since whales and dolphins are mammals, they cannot breathe under water.   They must come to the surface to breathe air. They breathe through a blowhole,   or nostrils, on the top of their head. Babies are born under water and   must be pushed to the surface, by the mother, so that they can take a   breath.
• they don't have fur.
•  

  The circulatory and respiratory systems have adapted to living in water.   Whales and dolphins can dive deep in the water on a single breath.   Whales and dolphins also have a highly de
• veloped brain. They are consider   to be very intelligent.
• echolocation

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  Marsupials are best known for the Australian
• kangaroo, wallaby and the koala.
• The only marsupial native to North America is the Virginia opossum.

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• • This does not mean that some of us need to be monkeys!
• Humans are part of the primate family.
• Primates have   well developed hands and feet, with fingers and toes. Their opposable   thumb makes it easy for them to grab things.
• Primate eyes are forward in the head giving them stereoscopic vision.   This allows them to judge distance.
• Primates also have large, highly developed brains.
• Their large brain also allows them to develop complex language and communication   skills.
• Parents also care for and educate their young much longer than other   animals. This results in a strong bond between a baby and the mother.
• Although primates are born fully formed, they tend to have a long gestation   period in their mother's womb.

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