The cownose ray is in width at birth. There is some controversy over the size that a mature cownose ray can reach. Stingrays, including the cownose ray, can pose a low to moderate risk to humans. In 2006, the Devil Rays added a live Cownose ray tank to Tropicana Field. A cownose ray is typically brown-backed with a whitish or yellowish belly. The cownose ray feeds upon clams, oysters, hard clams and other invertebrates. The cownose ray is often mistaken for being a shark by beach-goers. A cownose ray has a spine with a toxin, close to the ray's body. The cownose ray often migrates from the Gulf of Mexico to Trinidad, Venezuela, and Brazil.