right ok e-ki is about 1 and a half, i noticed a tiny part of his tail was going red and then the rest followed, i thought that maybe he was maturing and changing colour, he jumped off his rock today and i noticed his tail made a little thud, usually he had the tip upright but there seems to be no movement in it at all! he can lift the very top part by his bum but the rest is limp :/ when i got him he had a tiny nip on the tip of his tail but the vet said it would be nothing to worry about and it would drop off..whats happened to him? the colour of his tail is more red than its showing in the pictures - not very good quality..