Colombo Zoological Gardens, usually called Dehiwala Zoo, is a long-established urban zoo south of the city centre. The grounds are leafy and tropical, with a mix of Sri Lankan species, aquarium displays, birds, reptiles, and larger mammals that make it popular with local families.
Standards and expectations vary, so travellers who are sensitive to animal-welfare issues should read recent visitor information before going. For families based in Colombo, though, it remains one of the city's most familiar day outings and a useful look at local leisure culture.