Amber: Poor you and Cassidy! You said you spoke to your vet. Did he actually examine her and run urine tests? I am thinking urinary tract infection which can cause a pup to pee constantly and indiscriminately. My Maggie did have urinary issues as a result of her spaying and I honestly can't remember how old she was when she was diagnosed but, when I rescued her, she was a year old and it was not immediately after that so she was definitely older than Cassidy. I know Jen's Jersey has similar urinary issues -- I'm sure she will weigh in as to when they started with Jersey.