Mammals
Introduction
The Bumblebee Bat is about an inch
The Blue Whale is the largest mammal growing
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Mammals Introduction
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The Bumblebee Bat is about an inch |
The Blue Whale is the largest mammal growing |
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| long and weighs .07ounces. | to 100 feet and weighing 200,000 pounds! |
Introduction
The one trait that humans share with many animals on earth is that they are mammals. Mammals are animals that include: backbones, have skin covered with hair or fur, are warm-blooded and need to breathe air. Female mammals produce milk for their babies from glands called mammary glands. This is where the word mammals came from.
There are 3 groups of mammals: monotremes, marsupials, and placentals. Monotremes are very unusual mammals that live in New Guinea and Australia and actually lay eggs like birds. Marsupials raise their young in an outside pouch like kangaroos and koalas. Placentals are the largest group of mammals. Their babies fully develop inside the mother until they are ready to be born. Humans belong to this group.
You will be learning about either the humpback whale or the polar bear.