My bunny just turned 9, so I know what you mean about being more mellow at this age. Some days all Kiwi wants to do is just chill by himself, and I have to respect his space, but most days I can get him to interact well. I’ve found that Kiwi responds best to toys that make sounds, especially things with bells. He loves throwing noisy balls around and will go back and forth with me. However he also seems to get bored with toys rather quickly. Are you regularly introducing new toys and things to him to try? I find a lot of the rabbit/small animals toys sold in stores are all the same and Kiwi doesn’t have much interest in them. I’ve started purchasing cat toys (nothing with cat nip or anything soft his teeth could get stuck in) and he absolutely loves them. I find cat toys to be more interactive for bother of us, and he seems much more interested in them. I got him a large cat tunnel to hop through and he can’t get enough of it. I’ll sit next to one end of it and he will run back back and forth through it, always stopping to get my attention. He also loves the wands with a toy attached to a string on it. He will chase me around if I have one.
Have you noticed at all that he’s developing any signs of arthritis or joint troubles? At around 8 years old, Kiwi began getting more mellow than usual and not playing quite as much. The vet says they don’t see any arthritis yet, but that doesn’t mean it’s not there. Since then I’ve been giving him an Oxbow Joint Support supplement everyday, and I’ve noticed a huge difference in his activity level. It took some convincing at first, but Kiwi thinks they are treats now and loves to eat them. Not at all saying he’s sick or anything, but just something to think about if you don’t see him running around much.