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Putting It Together
Page 1: FishPage 2: BirdsPage 3: AmphibiansPage 4: MammalsYour Book

Bats versus Mammal
Use the photos and facts to compare mammals and bats. Then answer the questions below.

  1. Bats often live for a long time as compared to other small animals. The North American Little brown bat can have a lifespan of more than 30 years, while the common house mouse usually lives no more than a year.
  2. Moments after baby bats are born, they nurse on their mother’s milk.
  3. Bats are warm-blooded animals, meaning they produce their own body heat and don’t need to lie in the sun to warm up. But when they are not active, bats sometimes allow their body temperature to sink very low.
  4. Bats are smart animals. They learn quickly, are able to solve problems, and can adapt their behavior to changes in the environment.
  5. Bats generally have only one baby at a time, so it takes a long time for new births to rebuild a population. When a bat habitat is destroyed, the local population can be dramatically affected.
  1. Very different animals, including elephants, dogs, and whales, all belong to the same group of vertebrates — mammals. Mammals have well-developed brains and are intelligent.
  2. Mammals are the only animals with hair. There are exceptions, though: Some mammals that live in the water, such as dolphins and whales, don’t have hair.
  3. Mammals are warm-blooded animals that usually give birth to live young that they then feed on the mother’s milk with special organs called mammary glands. (That’s how mammals got their name!)

Answer the questions based on the evidence.

What’s one fact that makes you believe bats are mammals?
What’s one fact that makes you believe bats are not mammals?
Do you think bats belong in this group? Why or why not?