Central administration of mammalian GnIH (RFRP-3) decreases male sex behavior (rats).Central administration of avian GnIH reduces sexual motivation and vaginal scent marking (female hamsters).Central administration of mammalian GnIHs (RFRPs) induces anxiety-related behavior (rats).Central administration of mammalian GnIH (RFRP-3) increases food intake (male rats, sheep).Bilateral intraamygdalar administration of mammalian GnIH (RFRP-3) decreases food intake (male rats).Bilateral intraamygdalar administration of mammalian GnIH (RFRP-1) has positive rewarding–reinforcing properties (male rats). The gene discussed is NPVF; the disease is Anxiety.