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In this research, we revisit the paper by Pal et al. [Int. J. Appl. Comput.Math (2017) 3:1833-1845] and comment on the claim that global stability of theinterior equilibrium point depends on some key parameters. This is not true,and we have provided detailed proof to this effect. The considered model is amodified Lotka-Volterra model where square root functional response isinvolved. The square root functional response is non-differentiable at theorigin and hence cannot be studied with standard local stability tools.Furthermore, our numerical simulations indicate that we can classify the phaseportrait into two modes of behavior where some positive initial conditionsconverge towards the predator axis in finite time.

Comment on predator-prey dynamical behavior and stability with square root functional response