well welcome to the site, and yes pretty near everyone has this at some point, it's a acne that bully's get. It helps if you dry the chin after they drink. It's kind of a teen age thing sorta. If you think about the bulldog chin. It's the first thing on them that touches everything. Dirt, food, water. Best to keep it clean.My 10 month old bully has pimples under her chin. It has been opening up and she bleeds on my bed, couch etc. Has anyone experienced this before and what did you do about it? Thanks!