captionPIC FROM MERCURY PRESS (PICTURED: ONE OF THE BABY CHAMELEONS AT CHESTER ZOO, HELD BY LEAD HERPETOLOGY KEEPER, ADAM BLAND)Three incredibly rare chameleons the size of a FINGER TIP have hatched at Chester Zoo - the first of their kind to be born there.Its the first time the zoos reptile experts have successfully bred the Cameroon two-horned mountain chameleons, which are just 5cm long.The first in a clutch of three eggs laid by proud mum Ruby, hatched in late August [24] with two more following soon after.