My problem child

My cat has to go back to the vet again. He spent a few days at the vet last year because he decided to swallow some string. He had to have that removed from his intestines. (Not a cheap procedure.) Now he has a cavity. He has to go to the vet tomorrow to have it filled or to have the tooth removed. He is not a big fan of the vet now, so I don't think this will be a fun experience.