EMERGENCY!!! please HELP!!!!?

i used to live in mississippi and i used to catch these things all the time when i was a kid and i love them and the bump is called an abscess horses can get it in their hooves too it does need to be drained or drain itself this website can probably help you if you want to just know about the abscess just go to edit at the top left of the screen and type in bum and you will find it i hope it gets better and i hope he feels better. it will not if drained properly and kept clean for no infections. when i went to petco i was soooo surprised after moving to new york that you could actually sell them for six dollars a peice because they were so easy to catch and to find. =P