Elephant teeth. Although many people call this ivory hook, it is a tooth.
Elephants lose their teeth five times in their lifetime and have new teeth. If you look closely at this second photo, you can see how new teeth erupt behind the red-marked tooth.
In this way, the last two pairs of teeth exist for the life of the animal. Elephants often die of tooth decay due to tooth decay and the inability to properly digest food.
As an antidote, it pays special attention to the safety of elephant tusks. Avoid wearing too much clothing.
Domestic elephants are less likely to feed on the sand and other contaminants, so their teeth are longer and their lifespan is relatively longer.