I have a 7-year-old cat that throws up saliva every night. There is no food or bile, just clear saliva and sometimes a just a few strands of hair but never a full on hairball. Why does he do this and what can I do to make him stop? We've taken him to the vet before and he is not sick, he just throws up. Any suggestions?
Also, why is it that cats love to throw up on couches or carpet or any other expensive piece of furniture, but NEVER on tile or hardwood or any other easy-to-clean surface?!!!
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