Enables vascular endothelial growth factor receptor 3 binding activity. Involved in several processes, including positive regulation of blood vessel endothelial cell migration; positive regulation of protein autophosphorylation; and regulation of vascular endothelial growth factor receptor signaling pathway. Acts upstream of or within positive regulation of neuroblast proliferation. Predicted to be located in membrane. Predicted to be active in extracellular space. Biomarker of colon adenocarcinoma. Human ortholog(s) of this gene implicated in breast carcinoma and hereditary lymphedema ID. Orthologous to human VEGFC (vascular endothelial growth factor C). [provided by Alliance of Genome Resources, Apr 2022]