Earlier today I realised my dog had a black dot on his underbelly at his rear end. My first thought was tick! but I'm finding it difficult to tell. It's a black scab-looking thing only 1mm size which looks like it's lodged in a small pocket of skin. I can't see any legs it's so small but it's quick flat so could be a dead tick? I've tried to take a photo but every time I try to inspect the area my dog freaks out (I don't think it's pain though because he hates me poking around checking things anyway) and I think it's too small for my camera to focus o. It could just be nothing but I'm worried about Lyme's disease- is it safe to leave for a bit to see if it grows any bigger in case it's a tick? I don't really know what to do so any advice is much appreciated!