I have always been interested in Marine Iguanas which are only found on the Galápagos Islands.
On the follwing picture notice the bumps on its head...
During the mating season, iguana males fight a lot with each other and often 'bump heads'. Thus, one could view them as some form of 'antler', a weapon that helps during fights.
They also have bigger and sharper claws compared to other Iguanas.
Really cool reptile one of my favs
