Enables Wnt-protein binding activity. Involved in several processes, including decidualization; mammary gland involution; and negative regulation of signal transduction. Located in cytoplasm and extracellular space. Human ortholog(s) of this gene implicated in metaphyseal dysplasia. Orthologous to human SFRP4 (secreted frizzled related protein 4). [provided by Alliance of Genome Resources, Apr 2022]