Hello!!

So we have a house rabbit - he’s called Cookie, he’s 11 this year. He was neutered before he turned 1. As he turned 9, he suddenly started this hyper sexual behaviour, and humps his favourite ball constantly. I mean as soon as that ball is in sight he’s honking and humping it obsessively. Has anyone else experienced this with their older rabbit? He’s not aggressive at all, just really really affectionate with us, or humping his ball obsessively lol Pic of him and his mate He’s also lost all litter habits, he will only poop on a blanket or a specific spot in the garden! Such a weird bun ????????