Dallas Zoo is a 106-acre zoo located 3 mi south of downtown Dallas, Texas, in Marsalis Park. Established in 1888, it is the oldest and largest zoological park in Texas and is managed by the non-profit Dallas Zoological Society. It is home to over 2,000 animals representing 406 species. It is an accredited member of the Association of Zoos and A…Dallas Zoo is a 106-acre zoo located 3 mi south of downtown Dallas, Texas, in Marsalis Park. Established in 1888, it is the oldest and largest zoological park in Texas and is managed by the non-profit Dallas Zoological Society. It is home to over 2,000 animals representing 406 species. It is an accredited member of the Association of Zoos and Aquariums, and is a member of the World Association of Zoos and Aquariums.