After removing it put it in a ziplock bag and freeze it. If your dog starts acting sick in the next week or so take them to the vet along with the frozen tick.
Sure don't look like a skin tag, so more likely a tick.
Never had to deal with a tick, but I was in the scouts and did a lot of outdoor activities and tick removal is one of those things they cover a lot. Use an oil or petroleum jelly to smother it and it should release and back out on its own. The other method widely taught when I was a kid was to light a match, blow it out and then use the still hot end to coax the fucker out; but I'm pretty sure that's discouraged these days.
lol, my dog had one of those. I also thought it was a skin tag, at first. I live in a place where there aren’t a lot of ticks; we had adopted her from another part of the country. One day, the sucker was suddenly like 3 times the size, so I took a closer look. I had been giving that little bastard pets the whole time.
Don't pull on it. You can seperate the butt from the rest of the body, and you push the blood back from its butt into your dog. If it's a tick it looks really full, and will fall off soon. Get yourself a tick tweezer, that way you hold the tick from its body and then twist it off without risk of pushing blood back.
Yeah I 2nd tick tweezers. I removed a lot of tick from shalter dogs and tick tweezers are so simple but efficient: just don't pull but rather, like state, twist it off!