I agree, rabbits do not respond to negative reinforcement. All it will do is harm your relationship with your bunny. Some bunnies just react differently to things as well, just like humans and other animals. Some of my bunnies are really startled by slight noises, and the other ones don’t react at all. I think it’s just natural personality variation.
You need to improve your bunny proofing (and his housing), and redirect him to safe things to chew. You might also incorporate some positive reinforcement training, and instead of telling him what not to do, you can use an “interrupter” cue, and then a command to do something else. Clicker training works really well for bunnies. For example, if you bun is getting into trouble, you can train him to come to you on command and “target”. I use this technique a lot with my trouble-maker bun Cooper. He comes running when he hears a kissy noise (usually I make this noise when I give a treat), so often I will call him to me to distract him from what he’s doing, rather than going over and trying to shoo him away from the problem.
What is the main thing he tries to chew? maybe we can give some suggestions for alternatives? I use NIC metal grid panels in my rabbit’s pens because they are chew-proof, so many you can just swap out the plastic panels with metal grids?
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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.