We have red ants in the yard of the house I live in, and I think Stew got bit this am. He came inside after pottying, and was acting fine; then, a little bit later, I saw him rubbing his rear foot on the carpet like he was itching it. Then, he started acting weird, his leg was shaking like crazy, and he would run around trying to find a comfortable spot, but clearly his foot is bothering him. He will come stand next to me to get me to help him, but his legs come out from underneath him. I'm not sure if he is just in pain (he always acts strange when in pain, and will NOT let me help him, he growls and will snap if I push it) or if he is really having trouble with his legs, because they only come out from underneath him on the tile floor, not the carpet. I have him x-penned in on the carpet now, to get him to stop pacing and running around, and so he doesn't get hurt. He has a few little red spots on this lower legs that are started to turn into bumps, and he is licking at them, but won't let me get to them to really see them or clean them. Should I just keep an eye on him, or does it sound like something serious? Also, if anyone knows how to get rid of the ants in a dog-safe way, please let me know, I do not want anymore bites on anyone.