Puerto Rico, including the kapok tree with its thick trunk, the poinciana , the breadfruit, and the coconut palm. A tropical rain forest in the northeastern section of the island has tree ferns, orchids, and mahogany trees; part of this tropical area is included in the Caribbean National Forest. In the dry southwestern corner of Puerto Rico are cactus and bunch grass. Puerto Rico has no large wild mammals. The mongoose was brought in to control rats on sugarcane plantations. Iguanas and many small lizards abound, and bats are present. The island has one animal found almost nowhere else in the world—the coquí, a small tree frog that produces a loud, clear “song” from the branches of trees at night. Barracuda, kingfish, mullet, Spanish mackerel, tuna, lobster.