Basically, the Dehiwala zoo provides all the facilities for many animals all over the world and due to high abundance of species, there was a difficulty of keeping endemic and native animals of Sri Lanka in those controlled condition.

The commencement of Pinnawala Open Zoo first came through the period of former President Chandrika Kumaratunga in 2000.

[3] The zoo was opened on 17 April 2015 by Tourism & Sports minister Mr. Navin Dissanayake and National Zoological Gardens Department Director General Anura de Silva.

[4] The Pinnawala zoo is home for the many endemic animals in Sri Lanka.

Currently, the zoo is home for many native animals such as chital, lion, Sri Lanka Leopard, Purple-faced leaf monkey, Wild boar, Sambar, Asian elephant, and different endemic bird species.