Thrashers are a small genus of spinosaurid dinosaur that are mostly known to be solitary and wild animals. However, following fostering and raising attempts by a trained veterinarian, it has been discovered that thrashers respond well to training and can be protective of stickman individuals. Thrashers are by no means domesticated, but they are easily tamed if raised from infancy. They are noted to have intelligence rivaling that of a seven year old stickman child. River thrashers are notable in their ability to detect seizures in individuals up to an hour before they occur.

There are four known species of thrashers; River thrashers [Spinosaurus cyhus] are the most studied in captivity and respond the best to training, whereas spangled thrashers [Spinosaurus aegis], arcane thrashers [Spinosaurus arcanus], and canyon thrashers [Spinosaurus petras] are not known to be as amicable towards stickmen or present the ability to detect medical conditions as well as river thrashers do.