END OF HELL ‘World’s worst zoo’ where loneliest elephant Kaavan was caged is finally SHUT DOWN as last two animals are rescued Updated: 16 Dec 2020, 23:32 A CRUEL zoo where lonely elephant Kaavan was caged has shut down after the final two animals were freed. Marghazar Zoo in Islamabad, Pakistan - dubbed the "world's worst zoo" -closed after two malnourished former-dancing bears named Bubloo and Suzie were rescued. 9 Bubloo was one of the last two remaining animals to be rescued from the zoo in Pakistan 9 Himalayan bears, Suzie and Bubloo, had their teeth ripped out and were beaten while being taught to dance