Okay, this post is going to be a bit gross
It seems like every couple weeks I notice a lull in the noise in the house, look around for my intact male, and find him standing there in the middle of the room with his back arched, thrusting away slowly, and a huge pool of fluid sprayed all over the floor underneath him. Often he is physically incapable of stopping even if I put him on a leash and go outside for a walk. I've also seen neutered males exhibit this behaviour occasionally, though obviously without the disgusting mess.
He started doing this at puberty, but he's now almost 20 months old. Is it something I can realistically expect to decrease in frequency at this point, or do I have to look forward to mopping up these messes for the rest of his life?