hi. We have a 4 year old veiled chameleon called Fred. We have found him on the floor of his viv a couple of times over the last week but the ought nothing of it as he seemed fine. Tonight I found him on the floor again. I picked him up & he curled up in my hand. I took him to my husband & he curled up with him & went to sleep. This is very unlike Fred. He doesn't like being handled by anyone but my husband & normally hisses with his mouth open epically when I'm around. He is still bright coloured but seems very weak & sleepy. Please help