Warren Foster puts Bugs Bunny and Yosemite Sam in Roman times in Roman Legion-Hare (1955).
Foster tosses in two scenes involving lions. The second has Bugs trying to get away from Sam through an underground room of sleeping lions. The drawings below tell what happened. Enjoy some of the poses.
No, I don’t know why there’s a manhole cover in ancient Rome.
Freleng was down to Art Davis, Gerry Chiniquy and Virgil Ross animating. Can’t tell you if Bob Matz, Lee Halpern or Art Leonardi were assistants at the studio at this point.