The census of lions takes place every five years. Previously indirect methods like using pugmarks of the lion were adopted for the count. However, during the census of April 2005 (which originally was scheduled for 2006, but was advanced following the reports and controversy over vanishing tigers in India), "Block-Direct-Total Count" method was employed with the help of around 1,000 forest officials, experts and volunteers. It means that only those lions were counted that were "spotted" visually. Use of "live bait" (a prey that is alive and used as a bait) for the exercise, though thought to be a traditional practice, was not used this time. The reason believed to be behind this is the Gujarat High Court ruling of 2000 against such a use of animals.