Singapore has about 65 species of mammals, 390 species of birds, 110 species of reptiles, 30 species of amphibians, more than 300 butterfly species, 127 dragonfly species, and over 2,000 recorded species of marine wildlife.
The Central Catchment Nature Reserve and the nearby Bukit Timah Nature Reserve are the stronghold of the remaining forest animals on the mainland. These enclose the only remnants of primary forest on the island. The former includes four reservoirs (MacRitchie, Upper Peirce, Lower Peirce, Upper Seletar). The northeastern offshore islands of Pulau Ubin and Pulau Tekong are also rich in wildlife.
Other areas of note are Sungei Buloh Wetland Reserve, Singapore Botanic Gardens, Bukit Batok Nature Park, Pulau Semakau, etc.