Before revision:  We estimate the value of p_c to be 0.4943 \pm 0.0005 and the critical exponent for the divergence of the correlation length \nu to be consistent with the 2D isotropic percolation value 4/3. We further show Chase-Escape percolation cannot fully be in the 2D isotropic percolationuniversality class as for p < p_c on a D-dimensional hypercubical lattice, the probability that the number of predators in the absorbing configuration is greater than s is bounded from below by \exp(-Kp^{-1 in contrast to the exponentially decaying cluster size distribution of isotropic percolation .
After revision:  We estimate the value of p_c to be 0.4943 \pm 0.0005 and the critical exponent for the divergence of the correlation length \nu to be consistent with the undirected percolation universality class. We define a discrete-time parallel-update version of the model, which brings out the relation between chase-escape and undirected bond percolation. For all p < p_c on a D-dimensional hypercubical lattice, the probability that the number of predators in the absorbing configuration is greater than s is bounded from below by \exp(-Kp^{-1 in contrast to the exponentially decaying cluster size distribution of isotropic percolation .