  We consider the so-called frog model with random initial configurations. The
dynamics of this model is described as follows: Some particles are randomly
assigned on any site of the multidimensional cubic lattice. Initially, only
particles at the origin are active and these independently perform simple
random walks. The other particles are sleeping and do not move at first. When
sleeping particles are hit by an active particle, they become active and start
moving in a similar fashion. The aim of this paper is to derive large deviation
and concentration bounds for the first passage time at which an active particle
reaches a target site.
