First of all, he was 73 when that picture was taken in 2010. Here he is just 3 years earlier at age 70:
https://www.ajc.com/news/photos-smokey-bear-turns/ExvvK5gWjVEuN9dLVDl05K/
Second of all, you simply don't get that muscular without PEDs. Fucker looks like Ronnie Coleman.(http://www.autoadmit.com/thread.php?thread_id=4028602&forum_id=2#36446898)