Maine Coon Cats: Size, Diet, and Grooming Needs

By Michael Thompson · October 3, 2026

The Gentle Giant

Maine Coons are the largest domestic cat breed. Males average 13-18 pounds (some reach 25+), females 8-12 pounds. They hold the record for longest domestic cat at 48.5 inches nose to tail.

Growth Timeline

Unlike most cats who reach adult size by 1 year, Maine Coons grow slowly, taking 3-5 years to reach full size. Kittens may weigh 15+ pounds by their first birthday but aren't fully mature until age 4.

Dietary Needs

High-Protein Diet

Their large frame requires quality protein. Look for foods with named meat proteins (chicken, turkey, salmon) as the first ingredient. Adult Maine Coons typically need 300-400 calories daily.

Joint Support

Due to their size, Maine Coons are prone to hip dysplasia and arthritis. Foods supplemented with glucosamine and omega-3 fatty acids support joint health.

Grooming

Their thick, water-resistant coat needs brushing 3-4 times weekly. Pay special attention to the ruff (chest fur), britches (back legs), and tail. During seasonal shedding (spring/fall), daily brushing prevents painful mats.