Table 2.

Median von Mises stress and mechanical efficiency of biting in Fukomys mechowii and Bathyergus suillis at increasing gape.

	median VM (MPa)		mechanical efficiency
gape angle (°)	Fukomys	Bathyergus	Fukomys	Bathyergus
0	1.06	0.88	0.18	0.13
30	1.04	0.76	0.15	0.08
60	0.85	0.52	0.09	0.03
90	0.63	0.59	0.02	−0.03