DOGS ARE MAMMALS
We know they are mammals because their mothers nurse their young, their young are born live, they are warm-blooded (101.2 degree body temp), and they have fur.
Interesting facts about dogs:
• They can smell 1000 times better than humans.
• There are 400 million dogs worldwide.
• Dogs can understand up to 200 words.
• Dogs are descendants of wolves.
• There are 157 breeds of dogs.
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