Snowball, Snowball II, Snowball III, Snowball IV/Coltrane, and Snowball V are five fictional cats that have been owned by the Simpson family in the TV show The Simpsons. The differences between them are:
The various Snowballs have mainly been in the background but have been featured in several episodes, including "Old Yeller Belly", "The Seven-Beer Snitch", and the aforementioned "I D'oh-Bot".