My cat has had a cyst on the upper third portion of his tail for about a year now. It hasn't seemed to bother him nor has it gotten any bigger. I reasearched everything under the sun and found nothing like it on the net, and since we can't afford a vet bill, just let it go. Recently though, it has opened, and thee is a green pus being excreted. I am sure he will need some medication. First, could you tell me a few ideas of what it could be and secondly, what antibiotic I would need for this?
Sorry, but your pet should be examined by a vet for this. This is the best advise I can give you. I can not give a diagnosis without an exam. vetcare