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Detroit Zoo Tadpoles Aid Puerto Rico's Critically Endangered Toads
2 Jun
Summary
- Detroit Zoo sent 6,855 tadpoles to Puerto Rico to aid endangered toads.
- This effort is part of a long-running species survival plan since the 1980s.
- Over 143,000 tadpoles have been released by the zoo to date.

The Detroit Zoo has taken a significant step in conservation by sending 6,855 tadpoles to Puerto Rico. These young amphibians are destined for Rio Encantado in Manati, where they will mature into Puerto Rican crested toads. This species is critically endangered and endemic to Puerto Rico. The initiative is part of a species survival plan that began in the 1980s, representing the longest-running amphibian reintroduction program globally.
The zoo's dedicated amphibian center plays a crucial role in this long-term effort. By carefully selecting breeding pairs and recreating ideal conditions, the Detroit Zoo facilitates the breeding process. This recent shipment follows the successful breeding of pairs in early May. To date, the Detroit Zoo has released a remarkable total of 143,195 tadpoles as part of this vital conservation mission.
Habitat alteration and invasive species pose significant threats to the Puerto Rican crested toad's survival. Predators like feral dogs and mongoose also contribute to population decline. Conservation efforts, such as the Detroit Zoo's tadpole releases, are essential for strengthening wild populations and preserving Puerto Rico's natural heritage.