I wonder if you just haven’t found the right snack?
This happens with dogs too, where sometimes they just aren’t that food motivated. The advice in those cases is to use a higher-reward treat, keep sessions much shorter, and to be sure to time them to when your bun is hungry.
So since Dorian is pellet free now, doing training before he gets his salad would prob be a good move.
Some high-reward treats that people like to use for buns are tiny pieces of dried cranberry or raisin (like cut up into quarters). Training sessions could be as short as 30 seconds, just a few practices with the clicker.
There are also these Science Selective pellets that are alfalfa based that they use at the shelter as training treats, the bunnies seem to love them even though they are meant to be a base feed not a treat. They are shaped like a guinea pig poop, so it’s kind of hilarious because you feel like you are feeding guinea pig poop to the bunnies LOL.
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The answers provided in this discussion are for general guideline purposes only. The information is not intended to diagnose or treat your pet. Seek the advice of your veterinarian or a qualified behaviorist.