Biz is a submissive dog as it is. Fri his tail was down either to the side or btwn his legs. I talked to him & pet him to see if he would wag his tail and nope. He would sit really fast and lick a bit. I looked to see if something was there and he didn't want me touching his tail. He wasn't lathargic or sad, he still had the spark in his eye, played with a ball, and acted normal, but his tail. Sat I woke up w/a bladder infection so I was in bed and the bathroom all day til the meds kicked in, but saw that his tail was the same. He played with Gabbi, ate, peed & pooped and acted the same. Today (Sun) his tail is up, wagging and normal. Friday I made an apt with the bet for Monday. Someone said it was probably his anal glands and another said blockage. I didn't see anything obvious in the poop I cleaned up, but I confess I didn't really spread it out to look either. I am wondering if I should cancel the vet apt or take him just to make sure. I'm leaning towards taking him in.