Singapore is home to, or seasonally visited by, several nationally critically endangered species, each with unique characteristics that make them an integral part of the island’s rich biodiversity. While these species vary biologically, they share a common struggle for survival amid an increasingly urbanised environment, highlighting the urgent need for conservation efforts to prevent their extinction. Singapore’s commitment to safeguarding biodiversity is evident in its protected areas, such as the Bukit Timah, Central Catchment, and Labrador Nature Reserves, as well as the Sungei Buloh Wetland Reserve. These reserves act as essential sanctuaries for native wildlife and plant species, playing a crucial role in sustaining ecological balance and promoting conservation efforts within an urban environment.