The hedgehog did n't speak , did n't move , did n't do anything all except breathe and occasionally flick an ear at a new sound . It was like something had died inside him , Elise thought , and he was just waiting for his body to die as well . After she had spoken with the doctor and he had left , she sat down next to the curled - up hedgehog on the bed and scratched behind his ears . " Oh , Sonic ... " she murmured , " What are we going to do with you ... ? " She thought he mumbled something , but she was n't sure .
According to the above context, answer the following question.
What may be the reason for Sonic being in the hospital ?


None of the above choices .