This master’s thesis deals with gender stereotypes in Bulgarian and Croatian animalistic phraseology, i.e., it deals with idioms that in use fully or at least partially refer to male or female referents and for their component have an animal name (Hrnjak, 2017). In the first, theoretical part of the thesis, the terms phraseology and idiom are defined and the development of the discipline, characteristics of idioms and various aspects in the study of idioms are described. In the chapter of animalistic phraseology the basic postulations of cultural zoology and the concepts of zoomorphism and anthropomorphism are presented (Barčot, 2017). In addition to this, the role of sex and gender in language in general and in phraseology are explained. In the research part of the thesis is conducted contrastive analysis of the phraseological corpus, collected from phraseological and general dictionaries, relevant papers and online corpora. The aim of the research of this master’s thesis is to determine the extent to which Bulgarian and Croatian phrases coincide, which animals are components of phrases and what is their motivation. The result is the creation of an image of a man and a woman through the prism of Bulgarian and Croatian phraseology.