We've had more than 10 returned to us in the last year, and many in the years before that.
Quite often people bring them back when the bunnys partner dies, when a bun becomes ill and the owner can't cope or afford it, or if they have a change in circumstances and can longer keep the rabbits.
As Donna said earlier, our adoption form stipulates that the rabbits must be returned to us if they can't be kept by the original adopter, and we will always happily take back Hopper Haven bunnies.