Enables corticotropin-releasing hormone receptor 2 binding activity. Involved in several processes, including cellular response to glucocorticoid stimulus; cellular response to hypoxia; and negative regulation of gonadotropin secretion. Located in extracellular space. Biomarker of colitis. Human ortholog(s) of this gene implicated in hypertension. Orthologous to human UCN2 (urocortin 2). [provided by Alliance of Genome Resources, Apr 2022]