MacRitchie Reservoir has resident animals such as
birds, monkeys, and
monitor lizards. The
Treetop Walk, a one-way suspension bridge, is a popular attraction for birdwatchers and tourists. The monkeys at MacRitchie Reservoir are infamous for attacking people out of aggression and in search of food. These attacks have occasionally led to injuries among visitors. The National Parks Board has put up signs all over the reservoir, instructing people on what to do when they encounter monkeys. Birds such as the
white-bellied sea eagle can be found in the Upper Seletar Reservoir. ==References==