The further away the prey the fewer approaches straight ahead. Bufo viridis . From Bufo viridis . Prey located 12 cm behind lower fence in line with the toad. Fences are 60 cm long.
Charts show the percent gap approach vs. gap width in cm and degrees.
Effect of Double Symmetric Forward Gaps With Single Rear Gap Figure 10. From Bufo viridis . Effect of Offset Double Gaps Figure 11. From Bufo viridis. Prey in line with toad 12 cm behind rear fence.