Why do animals get away with not brushing their teeth, but human teeth will not last without regular brushing?
In:
It is in what we eat. Certain things we eat destroy the enamel that protects the fleshy part of our teeth (pulp). Namely cane sugar.
Once the enamel is compromised, it is easy for the pulp to rot.
Animals are not completely immune to this. Dogs, for instance, develop issues with tartar and plaque buildup that can lead to rotting teeth. In the animal world, the tooth will eventually just fall out/break/rot to nothing. It just happens that most animals (especially the carnivores that require sharp teeth to eat) only eat things that could never cause tooth decay.
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