How did the rabbit die?

It should be a coccidiosis attack.

Do you have severe convulsions and limb weakness? Coccidiosis is parasitic in the liver and intestines. Young rabbits are generally acute coccidia, and adult rabbits are generally chronic coccidia. Most rabbits have coccidiosis, but it will occur when the rabbit's resistance is low, usually from onset to death in a few hours. The symptoms are lying on your side, kicking and leaning your head back. Rabbits usually scream because of pain.

Your rabbit is still small, isn't it?

Chronic coccidia can be cured in the early stage, but acute coccidia can't be cured and can only be prevented.

There are many anticoccidial drugs on Taobao, such as coccidia, Changshan oral liquid and so on.

Coccidia drugs should be changed frequently, because coccidia will produce drug resistance.