At the far end of Kalemegdan Park you'll find the Belgrade Zoo (Beograd Vrt). Well known for it's white lions and baby lions that were born on site. The Zoo is one of the oldest in Europe and was founded in 1936. It's open 365 days a year and spans across 7 hectares. There are about 2000 animals in the zoo.
Belgrade Zoo - Beograd Vrt
Belgrade Zoo - Official Website Link
Some of the more popular residents are Muja the World's oldest alligator and Sammy the chimp who escaped from the zoo twice!
During WWII, locals in the neighbourhood would seek shelter at the zoo during German bombing raids thinking that it wouldn't be a target. Sadly the zoo was bombed twice and many of animals were killed or escaped and roamed the Belgrade streets.