Meet Mattie All about Mattie Mattie is a 5 months old female Domestic Shorthair cat and has been with us for 75 days. Note that many cats do not reach full size until they are about a year and a half old. The weight listed here is the cat's current weight. Photos (click for full-size) Additional Information Housetrained: Unknown or unspecified Has lived with animals: No Has lived with children: No Reason for surrender: Unknown × < >