The earback evolved from its ancestor, the sandsnapper. It has not only replaced its ancestor, but its other ovivore cousins, the eggsnapper and grasssnapper, as well. The reason its so successful is because its back frill has developed into 4 back-ears. Before this time all the snappers could do is feel vibrations in their back-sails, but now they have primitive ears with rotating earlobes. They can turn them to either side to better hear predators coming. It needed to improve its senses since stealing eggs is a risky task and it must know when predators are coming before it can see them.
They are also well-adapted for just about any environment except for extreme cold such as in the alpine. They can still change their color like their ancestors could. The one shown is a desert subspecies, but ones that live in the savanna will become more purple to blend in with the grass while the rainforest subspecies will turn bluish to blend in with the blue palms.
Their reproduction is dependent upon the rivers and thus they must migrate once a year to mate and lay their eggs in the rivers of the eastern regions of Glicker; the desert subspecies in the BioCat River, Huggs Temperate Forest subspecies in the Huggs River, rainforest subspecies in the Bone River, savanna subspecies in the Slarti River and the Yokto Temperate Forest subspecies in the Yokto River. Once they have laid them, the frog-like eggs will grow, hatch and will come on to land to search for eggs like their parents.
The earback will make their homes in burrows whether it be sand in the desert or dirt in the forest. They are not social at all and only meet during mating season. If another earback is at the same nest eating eggs, each will try to scare the other one off. Usually the bigger, more aggressive one will win.