This is the roar that was used for Tanner in the MGM Logos. Tanner's roar would later be reused for Metro-Goldwyn-Mayer's other two lions, including George and Leo. A similar variation can be found on the Network Sound Effects Library. Links: https://www.youtube.com/watch?v=-PFhZFxaGzE https://soundeffects.fandom.com/wiki/Tanner_Roar#Audio_Samples