 Additionally, Benoit argued that grooved and ridged canines are not necessarily associated with venomous animals either, as shown by their presence in hippopotami, muntjacs, and baboons, in which they play a role in grooming or sharpening the teeth; in the latter two, ridged canines are also accompanied by a distinct fossa in front of the eye, which is entirely unconnected with venom.Furthermore, grooved and ridged teeth in non-venomous snakes are used to reduce suctional drag when capturing slippery prey like fish or invertebrates.CT scanning of the known specimens of "Euchambersia" by Benoit and colleagues was subsequently used to provide more concrete support in favour of the venom hypothesis.