vasotocin

plural vasotocins

1. biochemistryAn oligopeptide found in nonmammalian vertebrates with properties similar to oxytocin and vasopressin.

   1 more example

   In mammals, vasopressin and oxytocin play important roles in social behaviors, and reptiles have structurally similar hormones called vasotocin and mesotocin. […] Dr. Campos’s research indicates that vasotocin may alter chemical communication between green anole lizards, and other researchers found that mesotocin may be related to courtship behaviors in brown anoles.

   2022 October 24, Hannah Thomasy, “They May Have Love on Their Lizard Brains”, in The New York Times