About the Mammals of Pennsylvania
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Question: What is a mammal?
Answer: A mammal is a hairy, milk-producing endotherm. The following
is a brief description of mammalian characteristics:
-
Mammals have hair or fur
- Mammal mothers nurse their young
- Mammals are warm blooded
- Mammals have four-chambered hearts
- Nearly all mammals bear live young (all Pennsylvania mammals do)
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