Some Monkeys Seem to Become Germophobic After Living Through a Disease Outbreak, Just Like Humans
Macaques that had gotten sick or seen others become ill were less likely to eat a tasty treat that looked like it was contaminated with poop than primates that didn't witness the outbreak—even though they didn't know how the infection spreads
We haven't written up this one. Smithsonian has the full story — the link below goes straight to it.