Thread: Weight

they are supposed to a long lean bread (Tall, long and narrow)

Why on earth do you think that? That is not what any of the MC breed standards say. The CFA standard, for example includes statements such as: "solid, rugged" and "BODY SHAPE: muscular, broad-chested." and "legs substantial, wide set, of medium length, and in proportion to the body." The TICA standard includes: "Torso: Large, long, substantial" and "Boning: Substantial. Musculature: Substantial, powerful" and "The Maine Coon is a large breed with big ears, broad chest, substantial boning, a long, hard muscled, rectangular body...Good muscle tone and density give the cat the appearance of power."

Seems pretty much the opposite of "tall, long and narrow," actually. In fact the TICA standard says to penalize a MC for having a narrow torso. I cannot recall ever seeing a fully mature MC that I would describe as you have. Certainly they would not score at all well in the show ring so no breeder is aiming for that shape.

Obviously one doesn't want one's cat to be fat, but simply being heavy (for a cat) does not imply that a MC is overweight. Fully grown male MCs can absolutely be over 20 lbs and not have a speck of fat on them.