Sam (my husband) has just had surgery, so he's been home the past few days. He rang me at work today to report that Boo had thrown up three times today. He also said that Boo had soft poop that was stuck to his paw (something he never does), so we're assuming it was liquidy. The worst part is he's been drooling massively all day, and drinking tons of water.

His nose is warm and dry and he's been lethargic and strangely distant.

Sam called the vet and he told us to not feed him for 24 hours, and then give him a small amount of wet food to see if he throws up again.

What could it be??