Your vet will be able to ask questions and do tests to identify if it is a medical issue, if not... Then behavioral.
My cat did this when I first got him for such a long time. Exact same situation.
But pleaseeee DONT rub his face in it.
Because a) cats pee on things when they're upset or angry...
I have a terrier mix (like a bit of schnauzer, shitzhu, and jack Russell) and although he NEEDS to give them a thorough sniffing when they first get here, after that he is totally up for cuddling or play! I'm fostering (and maybe adopting) a kitten with cerebellum hypoplasia and he walks funny...
So , it turned out it WAS harmless. Yay! For anyone interested, it was an inverted nipple! So instead of the cells from the nipple rubbing off as flakes like normal, instead they accumulated right underneath and then when pushed out, look kinda gross!
So it has a small chance of infection, and...
Our cat, tripod, has a weird little pimple type thing on his upper belly closer to his arms. It sort of looked like it dimpled in, and my boyfriend described it as a "suction cup"
Upon squeezing it slightly, a weird little thing poked out of it. When my boyfriend squeezed the surrounding skin a...