Beginning the endeavor, the 72-year-old actor took a jungle safari in Sanjay Gandhi National Park in suburban Mumbai last evening along with ministers and politicians.
"I will consider myself worthy as a brand ambassador when tiger preservation and securing their safety becomes successful. If my voice or face can provide anything good to this initiative, I will pledge myself for it," Bachchan told reporters here at the event.
The "Piku" star took jungle safari and he had a great time.
Bachchan revealed Maharashtra is home to the largest number of tigers in India.
"When we were moving from 19th to 20th century, the tiger count was 40,000. In 2008, it reduced to 1411. The movement that started after that has made it reach 2226 in number," he said.