Dimetrodon is one of the new species introduced in Survival of the fittest, the animal is seen in season 1, episode 1 and the final episode were Darius Bowman puts a gas into the cage line holding it and the other animals created curing them of their hyper aggression.ĭimetrodon is first seen attacking Brooklynn's family while they were driving and managed to kill her younger sister and father, while her mother was seriously hurt by the animal biting her leg, the animal was fended off by Brooklynn's older brother after he smashed the animal in the face with a metal pipe giving it a scar on it's lower jaw.