Continuity mistake: When Puss is telling his childhood story and he is in the orphanage, when Boy Blue spins Humpty, Humpty's hat is off, it comes back later in another shot.
Continuity mistake: After Puss breaks out of prison he rides the giant Great Terror goose using coloured bunting as reins to steer and control her. In one medium shot the bunting has disappeared, but it magically reappears in the next close-up of Puss sitting astride the goose's neck.
Suggested correction: The rope is always there, if you pay attention.
Continuity mistake: When Puss in Boots tells his childhood story to Kitty Softpaws, he first looks into a puddle of water. The reflection in the water is not mirror image. You can tell by his hat that it is normal.
Continuity mistake: When Puss is having a dance battle with Kitty Softpaws her chest is shown as all black but in later scenes it gains a white color.