Electronic Journal of Differential Equations, Vol. 2022 (2022), No. 37, pp. 1-15. Title: Dynamical behavior in a reaction-diffusion system with prey-taxis Authors: Yingwei Song (Northeastern Univ., Shenyang, China) Tie Zhang (Northeastern Univ., Shenyang, China) Jinpeng Li (Univ. College London, London, UK) Abstract: In this article, we study a diffusive predator-prey system with prey-taxis under homogeneous Neumann boundary conditions. We establish the existence and boundedness of nonnegative global solutions. Through comparison with the system without prey-taxis, we find that the positive constant equilibrium remains stable for positive prey-taxis, while negative prey-taxis makes it unstable. Submitted August 26, 2021. Published May 13, 2022. Math Subject Classifications: 35B32, 35K57, 37L10. Key Words: Reaction; diffusion; global solution; stability.