This documentary explores Singapore's hidden wilderness - overlooked areas of the island that are home to a variety of fascinating creatures, such as the flying colugo, the wild boar in Pulau Ubin, and the saltwater crocodile and a family of smooth-coated otters in Sungai Buloh. There are some other interesting wild creatures in Singapore, such as the elusive Suda Pangolin, the monitor lizard (the largest lizard on the island), and the white bellied sea eagle.

David Attenborough takes us on a journey through a day in the life of the wildlife that lives in Singapore's urban environments. From a troop of macaques in Bukit Timah to a family of otters in Marina Bay, the surprising and fascinating stories of the city's wild is exposed, from civets taking up residence in roof cavities to pythons hunting in drains.

Singapore's coasts and islands are home to an array of fascinating creatures, such as the rare tiger tail seahorse, the dynamic duo of the yellow watchman goby and the pistol shrimp, and the quick-changing cuttlefish, also among the fascinating creatures featured are the dog-faced water snake, the sand bubble crab, the golden orb spider, and the very rare Neptune's Cup Sponge.

The fourth episode explores Singapore's forests. Here on the fringes of the city, the jungle harbours some fascinating species, including many that have never been filmed before. The star of the show is the Raffles' banded langur, one of the least-known primates on the planet. Found only in Singapore and Malaysia, there are only a few hundred left and around 60 have made a home in Singapore's rainforests. A troop of nine live high in the canopy where their babies learn to climb and discover all there is to know about their jungle home. Below them, a cast of creatures carve out a life in this multi-layered forest world. Ambush hunting scorpions, flying dragons escaping from murderous jaws, a nest of weaving ants with their own farm, and one of the world's tiniest hoofed animals - the mouse-deer. This is a journey to discover the wonderful residents that thrive here.

Almost 30,000 species of animals make their home in Singapore, but many of them remain largely invisible to us. From banded bullfrogs that do battle in rain-sodden drains, to predatory mantises that hunt in suburban gardens, unseen drama unfold all around the city on a daily basis. Alongside Singapore's busy commuters and residents, countless insects labour to thrive and propagate. Dwarf honey bees collect nectar and pollen to feed their hive, while caterpillars undergo incredible transformations into beautiful plain tiger butterflies. Meanwhile, in Singapore's forest reserves, joggers and cyclists are largely oblivious to the work going on under their feet: termites constructing elaborate tunnels and recycling precious nutrients through the forest's ecosystem, and rare snails and gigantic forest ants foraging in the canopy and undergrowth. Voiced by naturalist Nick Baker, this is another exhilarating documentation of Singapore's surprising wildlife.

Meet the first ever brood of otter pups to be born and raised in UNESCO World Heritage site the Singapore Botanic Gardens. And six of the most precious and endangered Lesser Whistling Ducklings. Shot over seven months using state-of-the-art natural history techniques and equipment, this latest installment of the award-winning Wild City series takes you on a journey down the rivers and lakes of Singapore through the eyes of the young in the wild. With exclusive access to the otter family, we follow many firsts for the pups - from swimming lesson to hunting their catch. We also capture the ultimate display of a mother's love in the duck family as they faced down the fury of Mother Nature. Will these younglings be able to make it to adulthood? Joining the cast of water babies are huge river monsters battling for dominance; strange night-time creatures birthing hundreds of eggs at a time; and the most evolved of tiny creatures that can walk on water.