|“||A vicious, nocturnal hunter||„|
|— Allen, describing Therocephalian|
Therocephalians ("True Beast Tooth") were ancient synapsids that lived during the Permian and Triassic epochs and which were related both to gorgonopsids and cynodonts. It later evolved into a Cynodont in the Mid-Triassic.
Therocephalians were over half-a meter to over 2-in-a-half meters long. Vicious nocturnal hunters, these predators didn't rely on power to make a kill. Their attacks were swift and at first appeared unsuccessful, but these predators had a secret weapon: a venomous bite, with venom being more lethal and more powerful than a black mamba's, which could flood their prey's blood stream.