Animation errors are phenomena in cartoons, when certain scenes look strange, inconsistent or sometimes illogical. Usually these mistakes are committed by artists working on animation, often due to lack of diligence.
One particular episode that is intentionally full of weird and inconsistent scenes named Mistakes Will Happen, since its humor is supposed to revolve around such lack of logical continuity.
Types of animation errors
Animation and technical glitches
This error frequently appears in Season 6, where certain characters (Mona and Penelope Pussycat, see below) have two or more color schemes even in the same episode.
Sizing and shape errors
These errors usually occur as attempts of depicting certain facial expressions of characters, especially verbal communication (talking, yelling, yawning and so on). Female cats in Garfield and Friends episodes often suffer from such imperfections (see examples below).