Some of the funniest Dwarf Fortress bugs I remember hearing about:
-Cats were dying of alcohol poisoning because they would walk through puddles of alcohol in the tavern, and then ingest it when cleaning themselves
-A hammerer (dispenser of dwarven justice) didn't have a hammer, so when they went to punish a criminal, they bit their arm and tore it off, and then went about their day holding the severed arm in their mouth.
The problem with the cats wasn't that it wasn't that they ingested alcohol cleaning themselves, it was that the numbers were off and they ingested so much they instantly dropped dead from alcohol poisoning
In rimworld (heavily inspired by DF), animals for some reason prefer to drink beer before any other food. It's silly having a pop up tell you your puppy developed cirrhosis.
If I recall correctly, dwarves born in the fortress or arriving as babies remained roughly cat sized throughout their lives, as they didn't actually grow in size while growing up.