Maine Coons are renowned as one of the largest domestic cat breeds, earning them the nickname "Gentle Giants". Their impressive size is one of their most distinctive features, but it's important to understand the typical ranges and growth patterns.
Size comparison: Maine Coon next to average domestic cat
Adult Size and Weight
Average Adult Dimensions
Males
- Weight: 13-18 lbs (6-8 kg)
- Length: 38-40 inches (96-102 cm)
- Height: 10-16 inches (25-40 cm)
Females
- Weight: 8-12 lbs (3.5-5.5 kg)
- Length: 35-37 inches (89-94 cm)
- Height: 8-14 inches (20-35 cm)
Note: Length measurements include tail, which typically accounts for 12-18 inches (30-45 cm) of total length.
Growth and Development
Extended Growth Period
Unlike most cat breeds that reach full size by age 1, Maine Coons continue growing until age 3-5:
3-6 Months
- Weight: 5-7 lbs
- Rapid bone growth
- Development of coat texture
6-12 Months
- Weight: 8-12 lbs
- Frame development
- Muscle mass increase
1-2 Years
- Weight: 12-15 lbs
- Continued muscle development
- Full coat establishment
2-3+ Years
- Final weight achieved
- Full physical maturity
- Complete coat development
Physical Proportions
Key Body Features
- Head Size: Larger than average, with high cheekbones and squared muzzle
- Ears: Large and tufted, set high on head
- Body Length: Rectangular shape, with length 1.5-2 times height
- Tail: Equal to or longer than body length
- Paws: Large and tufted, proportional to body size
Factors Affecting Size
Genetic Factors
- Parental size
- Genetic lineage
- Gender differences
- Breed purity
Environmental Factors
- Nutrition quality
- Feeding schedule
- Exercise levels
- Overall health care
Record Holders and Extremes
While most Maine Coons fall within typical size ranges, some notable examples include:
- Longest Maine Coon: Stewie at 48.5 inches (123 cm)
- Heaviest recorded: 35 lbs (15.9 kg)
- Typical show winners: 15-25 lbs (6.8-11.3 kg)
Note: Extreme sizes are not typical and may indicate health issues.