Adult toads disperse widely when not breeding, however, it has been reported that fidelity to breeding sites is strong. Little is known about the periodicity of the crested toad. The Puerto Rican crested toad moves to and from the breeding sites. Little is known about the cover and shelter needed for this species survival. When not breeding mature individuals have been observed in limstone fissures and cavities and beneath limstone boulders throughout Guanica Forest.
Breeding occurs when sufficient surface water is available at the breeding site.
Little is known about the required depth of the water or the time the standing water must remain in order for the reproductive cycle to be completed. Current knowledge of non-captive reproductive habits for the crested toad is limited. Breeding occurs in temporary pools formed during the rainy season and as water evaporates or percolates down through the soil, water temperatures rise and metamorphosis occurs. Males emerge first and females follow, breed, and leave the ponds during or after the first night. Eggs hatch within 24 hours and tadpoles metamorphose within 25 days.