Cougar Mountain Zoo 2009, Peter Rittler continued in the zoo's management. The zoo collection features 32 exhibits of animal habitats concentrating on endangered species such as tigers, lemurs, wolves, reindeer, cranes, wallabies, macaws, and cougars, among others. On June 16, 2007, the zoo acquired two male Bengal tiger cubs, a royal white and a golden, who were born eight weeks apart in a Florida tiger preserve. The zoo added an additional two cubs in 2009. A glass-walled tunnel called the "Tiger Tunnel" enables visitors to view tigers in close proximity. In 2011, a 370-pound (168 km) tiger was photographed holding his paw up
Riga Zoo 88 species at the time. Many animals were donated to the zoo; in 1914, the zoo received 538 animals. During World War I the zoo experienced hardships and closed in August 1917 after German army occupied Riga city; after the war a camp for children of low income families was established at the site. On 29 December 1932 a society was established, which renewed the zoo and it was reopened on 24 September 1933 housing 124 animals of 48 species; by 1938 number of species had increased to 106. During World War II the development of the zoo stalled; however,