Tuvalu 2013 $1 Australia's Remarkable Reptile Frilled Neck Lizard 1oz Silver Coloured Proof CoinThe Frilled Neck Lizard is world famous for its vivid red and orange frill that flares out when it is frightened, this unusual lizards defensive display is quite spectacular. If standing up on its back legs and exposing large frill and teeth doesn't scare its predator, the Frilled Neck Lizard will run at speed on both back legs to escape danger.