The Maine Coon cat is a slowly developing breed.Occasionally,Maine Coon cats can have long hair already by the time they reach 5 or 6 months of age. Generally, growing a full coat reaches into the second year of a Maine Coon’s development.The exact time frame is dependant on different bloodlines, but also on the individual genetic make-up of each kitten.Some of our breeding cats don’t even grow a plum tail and a ruff (mane)around their neck until they are spayed/neutered. Please be assured that all kittens on this page will get beautiful fluffy tails and ruffs when they get older, especially when they are altered.