I tried to find the TMI thread, but I couldn't find it, so here it goes. Read at your own risk.
Okay, I've seen some wacky things, and a lot of things that most people would find disgusting. I've seen and removed maggots, warbles, tapeworms, roundworms, hookworms, etc. but removing a leech from a dogs penis is a first for me. I've seen them inside noses before, but this little guy decided to try a different part of the body. The client told me that he kept licking in that area, and when she checked him, she didn't see anything. She said that it was when he would urinate that she saw the bloody urine. When I saw the sample of his urine, the last thing I thought about was a leech. There was some blood, but there was also a penile discharge which gave me the impression that it was balanoposthitis. The dog had not been neutered, so that was my first thought. When I saw the dog licking that area, I looked to see if anything looked abnormal. It was a little red and swollen, but the sheath and small portion of his penis was exposed. When I saw that his penis was exposed, at that point, that's when I knew there had to be something inside keeping it from retracting. Long story short, I had to put the dog under anesthesia in order to get it out. There was no other way because it wasn't on the outside of the sheath, it was on the inside attached to the penis itself. I gave him some meds to help stop the bleeding and I sent him home. Well, there's a first time for everything. I'll have to post this one on VIN.
Clever little parasite.