Dinusanth

A previously tiny dinosaur that survived the Ice Age. In their youth their bodies are small and nimble, but the effects of puberty and wanting to grow make it so that during their adolescence they grow rapidly until they tower over others. Just be sure to not aggravate them after they grow as they're will be 100% capable of beating the living shit out of you.

A living specimen from the ages when dinosaurs still walk the Earth's surface.

A living dinosaur specimen which has survived the ice age thanks to it's small body allowing it to fit into small spaces for protection. In other words it is a very rare one of a kind dinosaur.