Simplify the following text for a Grade 4 native English-speaking person.
Original: There have been five cats in the Simpson 's family and the current cat is named Snowball V ( later renamed Snowball II ) . The first version of Snowball was killed when it was run over by a Chrysler .
Simplified: Snowball II was named after Snowball I. Though Snowball I had white fur , which inspired her name , Snowball II had black fur .