Hi again, Marc! Welcome back to Just Answer and thanks for requesting me to answer your question about Middy.I'm sorry his paw seems to be bothering him. It's very possible that there is a miniscule splinter or piece of foreign debris that is either stuck in his pad, or between his toes, that's difficult to see. He also may have an infection at the base of one of his nails that's not visible. Is Middy declawed? If so, during times of stress, his paw may give him a little pain and that's why he lifts it. If he is still running around and playing, that's good, but it's possible that he may have sprained/strained his paw or his foreleg. He probably would be showing more symptoms of pain if this were the case, though, but cats are masters of disguise when it comes to pain.For now, it would be a good idea to have him seen in person by the vet if this behavior is still going on in a few days, just to make sure there is nothing stuck in his paw or between toes/under skin, etc., and that he doesn't have a minor sprain.I hope all will be well with Middy!
Turns out the paw wasn't sprained; a couple of his paw pads were red and swollen. The vet gave him an anti-inflammatory shot and said that if it still was a problem to come back in a week. Nothing too serious. The paws were causing Middy too much pain for the vet to take a closer look at what the exact problem was. All in all it looks like he's going to be okay. Thank you.