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Why do we have baby teeth?

By: www.scienceworld.ca Starter Set Humans have twenty baby teeth and thirty-two permanent teeth. Your own toothage may vary. Most mammals also have two sets of teeth. Dogs and cats, for example, get their baby teeth in a few weeks and then lose them in a few months (I don’t know what that is in dog or cat years). Seen One, Seen Them All Most other vertebrates, i.e., fishes and reptiles, have teeth that come and go on an incoming and ongoing basis. This is a boon to all those tropical trinket tourist traps that sell necklaces with shark teeth. A given fish or reptile has a set of teeth that are pretty much all the same. All About the Fit…