Enables oxytocin receptor activity and peptide hormone binding activity. Involved in several processes, including ERK1 and ERK2 cascade; positive regulation of synaptic transmission; and regulation of secretion. Located in adherens junction; apical plasma membrane; and microvillus. Used to study gastric ulcer. Biomarker of hypertension. Orthologous to human OXTR (oxytocin receptor). [provided by Alliance of Genome Resources, Apr 2022]