Q. Our cat is meowing a lot,and it looks like his ear might be bleeding,and he threw up,what do you think is wrong with him?
DAVID ELBEZE, DVM, MRCVS
A. if he has a really bad ear infection it could affect his inner ear and cause vomiting. If this is the case he needs antibiotics ASAP to avoid further damage of the ear.
I'v already seen those symptoms in hyperthyroid cats as well (hormonal disease), so if the vet doesn't find anything in the ear it might be a good idea to do a blood test that include thyroid levels.
I recommend going to your vet today to get it sorted.