Oh dear!
One of my dogs tried to eat a spider which I assume came out of a bag of bananas. I'd never seen anything like it before, and the dog was violently sick after getting the spider in her mouth and starting to foam. Because the body was emitted with what the dog threw up, I didn't try to retrieve it, and the vet gave the all-clear, but it was a horrible few minutes, and I double-check all bunches of bananas now.