Instructions
Place a small box with a hole cut out of it into the bunny's cage. The bunny may calm down if it has a place to hide. Darkness is also calming to bunnies, so the box provides both darkness and a small, nest-like space for a panicked bunny.
Hold the bunny on your lap or in your hands and gently stroke the back of the head and body, if it is calm down enough for you to handle. Speak to the rabbit soothingly in a low voice. Although the bunny may not like to be handled, the more you hold it, the tamer it will become over time. If the bunny tries to bite, gently but firmly hold its head down and away from your body.
Feed the bunny and give it water. If the rabbit is still panicking, presenting food and water may distract it and then calm it down. It also reinforces your relationship as a provider and caretaker.
How to Calm a Panicky Bunny
Bunnies panic for a number of reasons but usually the panic attack doesn't last very long. Characteristics of panic include rapid movement, frantic attempts to escape a cage or closed area, and grunting. If your bunny is panicky, it is most likely because it is experiencing a new environment or has encountered another rabbit or other animal. If you have removed the source of panic and the bunny still exhibits signs of distress or restlessness, you can try soothing it with a few methods.