This paper is an attempt to describe Plutarch’s view on the idea of justice between animals and humans on the basis of a representative selection of passages from his works. Most of the analyzed passages are from De sollertiaanimaliumand De esu carnium. The criterion of selection was lexical and contextual, so passages containing words semantically related to the Greek terms for justice or law were particularly taken into account, as well as passages simply referring to the subject of justice for animals. The conclusion is that Plutarch believed that justice between humans and animals is possible and should be applied. However, conscious of how difficult this postulate is to achieve, he was content with urging people to limitthe consumption of meat.