The Chuck Jones mantra, instilled in him at an early age at Chouinard Art Institute in Los Angeles was, "you have 100,000 bad drawings in you, start getting rid of them now." And toward that end, Jones, each and every day, drew, almost constantly. Whether he was on the phone, having breakfast, sitting at the beach, having lunch at his favorite restaurant; there rarely was a moment when he wasn't drawing.
These three sketches of big cats may have been done at the San Diego Zoo (a favorite destination for him) or judging by the fact that two of the drawings are on MGM animation paper, it may be that he was at the Los Angeles Zoo. Wherever they occurred, Jones trademark economy of line distills the character and personality of each of these three big cats; whether in repose or leaping at you, each one exhibits what Chuck deemed most important: they are believable.