Are humans the only species that get two sets of teeth in a lifetime ?
Two sets of teeth?
pups and kittens lose teeth to get others although not in years like ours the first 6 months they lose their baby teeth
Reply:No, I think sharks get new teeth throughout their life...
Reply:no other humans do
Reply:Sharks get several, as far as I am aware, they just replace them till they die, unless you mean by the question 'only 2 sets', then I am not sure
Reply:obviously it's not too relevant but at least one species of dinosaur had several rows, where the oldest were on the outside and fell out occasionally and the new ones grew inside to replace them
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