Meet MIGHTY MOUSE All about MIGHTY MOUSE MIGHTY MOUSE is a 7 months old female Domestic Shorthair/Mix cat who weighs 4 pounds and has been with us for 49 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: Abandoned by Owner