Euchambersia is notable among therocephalians for possessing ridged canines and a large indentation in the side of the skull. Under the erroneous assumption that the canines are grooved instead of ridged, it has been proposed that these structures supported a venom delivery mechanism. More recently, the internal structure of the skull of Euchambersia has been used as stronger evidence in favor of the hypothesis that it was venomous; other possibilities, such as the indentation supporting some sort of sensory organ, still remain plausible.