World Wildlife Day is an opportunity to celebrate the many beautiful and varied forms of wild fauna and flora and to raise awareness of the multitude of benefits that conservation provides to people. At the same time, the Day reminds us of the urgent need to step up the fight against wildlife crime, which has wide-ranging economic, environmental and social impacts.
Wildlife has an intrinsic value and contributes to the ecological, genetic, social, economic, scientific, educational, cultural, recreational and aesthetic aspects of sustainable development and human well-being. For these reasons, all member States, the United Nations system and other international organizations, as well as civil society, non-governmental organizations and individuals, are invited to observe and to get involved in this global celebration of wildlife.
The secretariat of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES), in collaboration with other relevant United Nations organizations, facilitates the implementation of World Wildlife Day.

Background
On 20 December 2013, the Sixty-eighth session of the United Nations General Assembly decided to proclaim 3 March as World Wildlife Day to celebrate and raise awareness of the world’s wild fauna and flora. The date is the day of the adoption of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) in 1973, which plays an important role in ensuring that international trade does not threaten the species’ survival.
Previously, 3 March had been designated as World Wildlife Day in a resolution made at the 16th meeting of the Conference of the Parties to CITES (CoP16) held in Bangkok from 3 to 14 March 2013. The CITES resolution was sponsored by the Kingdom of Thailand, the Host of CITES CoP16, which transmitted the outcomes of CITES CoP16 to the UN General Assembly.

Read more at the UN’s website: http://www.un.org/en/events/wildlifeday/