Speedy Gonzales (1955)

Continuity mistake: When we see the four mice at the start of the cartoon, you can see there is nothing behind them, but when the camera pans in on them in the next shot, a cactus and a huge rock appear from nowhere.

Trivia: Even though this was Speedy Gonzales' second cartoon, he was re-designed after his debut in "Cat-Tails for Two" and this was the first appearance of Speedy as we know him today.