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
Developments at Zoo Basel to learn about the Chinese plant and animal life, as well as environment protection". Since 1961, the zoo has not grown in area. There is a possibility to expand east across the Birsig river. This would allow additional space for the giant pandas and other exhibits in the Sauter Garden. In various Basler Zeitung publications, a possible expansion to the north (Nachtigallen Wäldchen) was mentioned. A possible scenario would have demolished the parking facilities and moved them to another place, possibly a car park underneath the street just east of the current parking area, underneath the Erdbeerestreet. Developments at Zoo