The present invention provides an animal repellent comprising, as an active ingredient, a compound having an odor innately inducing fear in animals, which is free from acclimation of animals to the aforementioned odor. The present invention relates to animal repellent comprising, as an active ingredient, at least one kind selected from a heterocyclic compound represented by the formula (I):wherein ring A is a 3- to 7-membered heterocycle containing at least one hetero atom selected from a nitrogen atom, a sulfur atom and an oxygen atom, and R1 and R2 are each independently hydrogen, a halogen atom, an optionally substituted alkyl group, an optionally substituted alkoxy group, an acyl group, an optionally esterified carboxyl group, an optionally substituted thiol group, an optionally substituted amino group or an oxo group, or a salt thereof, a chain sulfide compound and alkyl isothiocyanate.
