>>29816161
People started brushing their teeth as a meme

But then since they kept doing it for so long through so many generations. Our teeth started to need to be brushed

Animals are generally unable to stuff themselves with fructose like humans can and do

>>29816161
No, your cat doesn't eat sugar and HFCS.
That's the reason.
If you stuck to only meat and vegetables you wouldn't have to brush your teeth either.

>>29816305
What about the ones which eat a lot of fruit?

>>29816322
Like birds? Birds don't have teeth, anon

Also fruit has much less fructose than a lot of human concoctions/abominations

Herbivores clean their teeth by rubbing them on or chewing things like bark or straw, and carnivores don't chew their food. Sharks and reptiles replace their teeth periodically and some reptiles' teeth are covered in living flesh which can regenerate the enamel. Some animals' saliva has a very high pH, which prevents decay, and they don't eat as much sugar as we do or have as much bacteria in their mouths. Finally, most animals also don't live long enough for significant decay to set in, but in captivity, where they live longer, decay can be a problem.

We eat foods that HIGHER in sugar than your average banana

>tfw fucked up teeth from sugary and fruity drinks