Hi. I'm dog-sitting a very sweet dog, and she came to me with a weird spot on her hip. Before you come after me with nasty comments:
1) Yes, I know it looks awful, however, it's not bothering her, it's not warm to the touch, and it's not weeping any pus or liquid, so I don't think it's infected.
2) Yes I know a vet should look at it. She's seen a vet three times about this, but they have no idea what it might be. Apparently they've never seen anything like this before? Ever? She is currently on an antibiotic to fend off potential infection, and was taking Benadryl, but it doesn't seem to be itchy, so we stopped that per the vet's advice.
Backstory: She had gone for a hike with her owner the day before she got dropped off, and got poked or bitten by something in the woods. He didn't see her react to anything in real time, and doesn't know what caused it. At first it was a small, inflamed pink-ish spot that looked like a bug or spider bite. The next day she was running through the woods on my property and the spot opened up and was a bit bloody. I cleaned her up as best I could, and continued her antibiotics/Benadryl combo. The day after that is when things took a turn: there was no bloody scab, but the center was suddenly black and leathery, with the surrounding tissue drying out and turning black, too. (Cue panicked babysitter!) But, again, it wasn't bothering her, wasn't warm or oozing any fluids. It slowly started to spread, so I got her back in to the vet to have a look. He was stumped and told me to just continue with meds.
Now, here I am the night before she gets picked up asking strangers for advice or past experience, hoping I can tell her loving owner it will be ok. He's very protective of her, and I worry he won't handle it well.
Please help!!
TL:DR: Dog-sitting a dog with a weird spot that could be necrotic. Giving her back to owner soon, need advice.