CKC Group: Persian Group Average Weight: 7 - 12 lb Common Diseases: PKD, HCM Screening Tests: Genetic Test Biomarkers: Kidney Persian cats are medium-sized, usually weigh between seven and 12 pounds, and measure from 10-15 inches tall. They have a rounded head, small, rounded ears, and big eyes. They also typically have a flat and pushed-in looking face with chubby cheeks.