system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: If vomiting gets rid of potentially poisonous food, then why do so many animals eat their vomit?
gpt
Canids (dogs, wolves, coyotes, and their other wild relatives) gulp large pieces of unchewed and/or boney food. After letting it soften for a bit, they bring it back up in private where they can sort out the bone and chew the meat without dealing with their packmates. They don't consume their vomit if they're puking because they're feeling sick.  
TL;DR: They only eat the good stuff.