My bunny is still young, but I believe he is getting close to 4 months old, as his testicles are pretty descended and I believe he is starting to realize he is a “man”. He is litter trained, and does not pee outside his box, but he will drop his “marker poop” in his cage. His testicles are pretty descended, but I did not think he was already 4 months old. When I let him run around, I have a fleece blanket for his to jump and play (we have hardwood floors and he doesn’t like that for jumping and doing his “karate moves”), he will pee just little spots here and there on the blanket. He will run and play then stop and just let out a trickle. He often hops in his litter box but he doesn’t pee entirely. He does it straight on the blanket, he does not find like a bunched up spot or on furniture however. So I am not sure if he is spraying or if he just gets excited and pees a little. He only does this when he runs on this blanket, he doesn’t do it when he runs on the hardwood or in his cage or anything. And yes I will getting him neutered.