 The zoo has stopped breeding hybrids after the 1985 legislation passed by the Government of India banning breeding of panthera hybrids after a vigorous campaign by the World Wide Fund for Nature (then World Wildlife Fund).The zoo remains one of the most popular winter tourist attractions in Kolkata.The footfall figures in 2016 showed an annual visitation of almost 3 million — more than any other tourist attraction in Kolkata, and a peak of over 81,000 on Christmas Day and New Year's Day.