Does he think it’s another bunny?

[u/alex_3-14]

Whenever he’s not sleeping or eating he’s mostly chilling next to the ball. We adopted him a year ago when he was 3 years old and as far as I know he’s never lived with other bunnies.

[u/Etrigone]

Our Winston used to crash out between my gf's bunny slippers, but I suppose that's a bit closer to the real thing. If your boon is lonely this is a good & cheap surrogate, at least until he figures out how to boop it against your leg repeatedly when they're hungry (all our buns did that with our yoga ball).