ALL carbs cause cavities that includes the starchy grains in pet food whether it be wheat, rice, or corn. Starchy potatoes are also in pet food now. I've even seen sugar on the ingredients of dog food before. There is also evidence that vitamin and mineral deficiencies make us more susceptible to cavities, and 99% of pet food poor quality. So all animals that eat carbs can get cavities! I'm not sure if wild tigers can get cavities or not but if they do it would be very rare!

It's plaque not sugar that leads to tooth decay. It is like CivetGirl
says. I read that sugar is not really the direct culprit of cavities. It substracts minerals and vitamins in the body. And therefore sugar depletes the digestive enzymes in the saliva. So the saliva becomes less potent to prevent tooth decay.

Which begs the question, does a bear s--t in the woods

I think one of the biggest factors at work here is lifespan. Most animals don't live that long.

your right op sugar is bad for your health and even the artificial
sugar can do more harm then good... I found that raw sugar is better for you and you do not use as much ...so that mean less intake of sugar ... if you like sugar ....as far as bears there are many different breeds and with the source of food they eat in the hills most of that does not give them cavities it is when they come out of the hills and some eat our garbage and will eat just about anything ...this can give them cavities ... and if they eat honey ...they are going for the hive... which is very likely to have a lot of honey in it...

Maybe this is "old news" but if you really crave sugar then you can
try Stevia. It is a japanese honey plant. And it tastes just like sugar. But it does not have any harmfull side effects like sugar. You can even grow it at your own place.

I think you are right. Takes a lot of time to dissolve enamel.