Enables calcium channel activity and identical protein binding activity. Involved in positive regulation of cold-induced thermogenesis. Acts upstream of or within several processes, including cellular calcium ion homeostasis; response to cold; and thermoception. Located in external side of plasma membrane. Is expressed in dorsal root ganglion; inferior vagus ganglion; and vagus ganglion. Orthologous to human TRPM8 (transient receptor potential cation channel subfamily M member 8). [provided by Alliance of Genome Resources, Apr 2022]