This chapter focuses on the methods by which behavior can be used to study olfactory lateralization in different animal models. Starting from the description of different testing paradigms, each paragraph reports and discusses the evolution and role of lateralized brain functions related to olfaction. The main advantages and disadvantages of behavioral techniques used to study olfactory lateralization are also discussed, as well as any behavioral and physiological validation. Furthermore, suggestions for improvements to the current methods are given in the last section, with a focus on dog and cat species.