system
Given the following post, respond as if you're commenting on Reddit:
human
Which animals, other than humans, use recreational substances, and why?

I'm thinking along the lines of felines using catnip, but that's really the only example I can think of. I was just interested because I know that many humans use alcohol or drugs for myriad reasons, be it because they're depressed or using it as a substitute for something else, or just because they want to get loose. 

So do other animals do the same thing?
gpt
Elephants and baboons in the Okavanga delta in Namibia will consume large quantities of fermenting fruit and stagger around drunk from the alcohol in the fruit. David Attenborough's Life On Earth series has videos of drunk elephants staggering sideways, crashing into trees. The video talks about them eventually passing out drunk; but going back and consuming more as soon as they wake up.