I just went to go pick up Reptar to move him into another container so I can clean his cage. Ive woken him up many times while he was sleeping before and all he did was find a comfortable spot to go back to sleep. But today, he opened his mouth as wide as it would go, and started hissing and trying to bite me. I had him on my shirt and I had to put on a glove to grab him and put him back. What could be wrong with him? He's NEVER acted like that. He's usually so sweet and loves being held.