Prey in line with toad 12 cm behind rear fence. From Bufo viridis. From Bufo viridis. Prey in line with toad 10 cm behind rear fence. From bufo viridis .
Lines are opaque walls so once moves away from a in-line position the prey disappears from view.
The course on one detour is shown on the right with the lines showing the orientation of the toad. Notice they tend to point to the expected location of the prey. Behaviors Is the Pretectal Area - Caudal Thalamus Frogs and toads will go over or around barriers in order to acquire food or some other desirable object as shown in figure 1. A toad or frog confronted with a grid barrier will usually not snap directly at the worm moving within the usual snap zone. If the barrier is placed laterally the frog will merely orient toward the object.