You are confusing Shannon (Information Theory) Entropy with Microevolution as characterized by minor changes over a relatively limited number of generations (i.e.; resulting from mutation, natural selection, artificial selection, gene flow and genetic drift). Microevolution is a loss in the fidelity of the transmission of the original data, but the resultant may contain a higher data content.
So then you could take say a population of dogs - say full-bred rat terriers - and turn them back into wolves. Given enough time of course.