Book excerpt: Wildlife watching tourist activities can make an important contribution to community development and conservation, especially in developing countries, but it needs to be carefully planned and managed in order to ensure its long-term sustainability and to avoid potential adverse effects on wildlife and local communities. This report, published by UNEP and the Secretariat of the Convention on the Conservation of Migratory Species of Wild Animals (CMS), considers the socio-economic and environmental benefits that can be derived from watching wildlife tourism, including case studies from Brazil, Argentina and Mexico, the United States, Australia, Indonesia and Tanzania.