Anandamide, an endocannabinoid neurotransmitter, acts as a ligand of the cannabinoid receptors. It possesses anti-proliferative effect which was accompanied by a reduction of cells in the S phase of the cell cycle. Anandamide also possesses the positive effects on eating behavior and motivation in mice. Recently was discovered, that anandamide reduced cryocapacitation and improved post-thaw sperm quality in the water buffalo (Bubalus bubalis).