What kind of desease is it if my hamster vomits a yellowy color liquid?

Hamsters, like many other rodents, cannot physicaly regurgitate. It's most likely he's spitting out what is in his cheeks (food pouches). Check to see if his stool is runny also. Has he been under a lot of stress lately? There is also a possibility of something called Wet Tail. Your best bet is to take him to a vet or reliable hamster breeder.What kind of desease is it if my hamster vomits a yellowy color liquid?
Just take it to a vet.

nba