Males are considerably smaller than females, and exhibit less prominent crests.
No studies have been conducted on the Puerto Rican crested toad's feeding habits, but as a general rule toads are opportunistic feeders that primarily consume insects and other invertebrates. When rainfall and surface water are adequate, more than one breeding event may occur in a single season. Breeding is concentrated in a very short period, and within a few weeks the toadlets metamorphose and quickly disperse. There is a high fidelity in breeding sites that offer the right combination of elevation, topography, and ponded fresh water. This toad is presently known to exist only on the main island of Puerto Rico.