The Puerto Rican crested toad is medium sized, ranging from 64mm to 120mm snout-vent length and is easily recognized by its turned-up snout and bony head crest. Adults are brown to yellow-brown in color with black or brown patches and their ventral surfaces are creamy white with some dark mottling. Females are larger than males and display a more prominent crest. During the breeding season, males exhibit yellow coloring on their sides and have dark nuptial pads on their first and second digits of the front feet. Juvenile toads are dark brown, exhibit a chevron marking on their backs. The chevron pattern tends to disappear after 2 years of age and have rust to salmon colored margins along their back and sides. (Lentini, 2004)