What aspect of *Hyaenodon*'s physique suggests it relied on ambush or short bursts of speed rather than long chases?

Answer

Its overall immense mass

While the legs provided reach, the sheer bulk of the largest individuals implies that they would rely on ambush or powerful, short bursts of speed to overcome prey, rather than pure, drawn-out velocity.

What aspect of *Hyaenodon*'s physique suggests it relied on ambush or short bursts of speed rather than long chases?
aparanceextinctmammalPrehistoricHyaenodon