There are several animals that use drugs in the wild.

Vervet monkeys in the Caribbean will eat the sugar cane crops that fermented before harvest. In experiments, 1 in 5 monkeys will choose the alcoholic drink over the virgin drink and younker monkeys are more likely to drink.

In Siberia, reindeer consume hallucinogenic mushrooms. Some researchers argue that this is the origin story for Santa.

Poppy farmers in Australia have reported wallabies consuming their plants, and then running around in circles before passing out.

Dolphins play with inflated pufferfish to consume the toxin tetrodotoxin.