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weirdscaryandusualstuff:

Weird Fact: Rats can’t vomit

Rats can’t vomit or burp because of a limiting wall between their two stomachs and their inability to control the diaphragm muscles needed for the action. Neither rabbits nor guinea pigs can vomit either. This makes rats particularly susceptible to poisoning (hence its popularity in controlling rat infestations). Because of this inability, rats will nibble at food to see if it makes them feel sick (they can’t vomit, but they can feel like they sure as hell want to!) If they don’t feel nausea they will scoff the lot.