Table 3. Offensive/defensive responses of Crotalus durissus terrificus and Bothrops alternatus snakes in Coimbra polygonal arenas and complex labyrinth during a 5-min exposure to mice.

	Polygonal arenas		Complex labyrinth
Response	C. durissus terrificus	B. alternatus	C. durissus terrificus	B. alternatus
Threatening posture	2	3	3	1
Defensive attack	0	0	0	0
Offensive attack	0	0	0	0
Predation	1	1	0	0
Rodents survival (%)	83.3	83.3	100	100