chameleon
- can catch flies over one and a half body-lengths away with its tongue
Q: How long is the veiled chameleon’s tongue?
A: A veiled chameleon is a small animal — about 5 inches (12.7-cm) long, not counting his tail — with a tongue longer than he. The tongue can stretch to six times its rest length, and is about 7.5 inches (19.0 cm) long.
He needs a long, fast tongue because he is neither. The slow-moving creature never chases his prey but only edges towards it. He rocks a bit to judge the distance, focuses his independent swiveling eyes and unleashes his tongue to smite the insect from afar — up to one and a half body lengths away. The sticky tip gloms on.
The tongue whips out faster than our eyes can follow, speeding at 26 body lengths per second, according to two Dutch biologists: Jurriaan H. de Groot, at Leiden University and project leader Johan L. van Leeuwen, at Wageningen University. The tongue hits the prey in about 30 thousandths of a second — one tenth of an eye blink.