Hey! I need some advice, I have a little Dwarf Lop, he is about 3 months old and I am trying to Litter train him. I have read up all about it, but at the moment he doesn't seem to be going in the one place, he poops and pees everywhere in his cage. I have a litter box and have tried different types of litter and in different spots in the cage but it doesn't seem to change. I have also tried putting all his poops in there. The strange thing is, when I let him out he poops in my cats litter! help!
I’m not an expert by any means. Fezzik is the first rabbit we’ve ever had. If he’s pooping and peeing all over his cage, I’ve read that it’s possible his cage is too small. You might want a larger area for him to run around in when he’s locked up, and that might encourage him to choose just one corner. When we got Fezzik, he would poop everywhere, but he chose like… three corners of our house to pee in. We bought multiple litter boxes and put them in those corners with his poops and with paper that had his pee on it. Eventually, we found his most consistent spot, and he started using it enough that we were able to remove the other litter boxes until he only used one exclusively. It also helps a lot if you put a bunch of hay into the litter box(es) because rabbits like to eat while they do their business. Putting it in the far corner of the litter box also encourages them to hop inside the box to eat it, and hopefully they'll do their thing while they eat.
I recommend finding a way to block off the cat’s litter box from the rabbit even if it’s only while he’s running around. If you’re using normal cat litter, the dust can be extremely harmful to your bunny’s lungs, so do your best to keep him out of there.
Another option could be to put the bunny’s litter box where the cat’s box is while the bunny is running around outside of his cage. Then, when you put him away, you put the litter box back into his cage with him (preferably in a corner because most bunnies have this weird thing where they prefer corners). It could encourage him to better understand that he needs to just do his thing in that one box. I don’t know how long you’d have to do it or if it would even work, but I think it’s something I’d personally try if I had a similar circumstance.