  We discuss scalar-tensor realizations of the Anamorphic cosmological scenario
recently proposed by Ijjas and Steinhardt. Through an analysis of the dynamics
of cosmological perturbations we obtain constraints on the parameters of the
model. We also study gravitational Parker particle production in the
contracting Anamorphic phase and we compute the fraction between the energy
density of created particles at the end of the phase and the background energy
density. We find that, as in the case of inflation, a new mechanism is required
to reheat the universe.
