The Avemetrus is a monster featured in the show American Dragon: Jake Long. It is a rare blue-green magical creature that looks like a fish and octopus hybrid. It has the tentacles of a squid emerging from its back and three sharp scaly spikes on its head and neck. It also has two clawed hands, sharp teeth, glowing green eyes, and walks around on its two pointy feet. According to Gramps, it is as old as time itself.