He is a breeder of Maine Coon's. My cat is a red Tabby Maine Coon and if your read up on Maine Coon's it will tell you that the M on the forehead is there for that. @5 months old he is bigger than my 2 Calico cats that are 9 and 8.
I also do believe you have a Maine Coon or a Maine Coon mix. A really good way to tell is by the the way everyone is yelling you, but the best way is they are born with a M on there forehead. I hope that helps as you can see in my purebreed, Simba he was 8 week when we got him and 5 months now...
My Maine coon has something similar but it is in the corner or his two lips meeting, on top. He is 5 months old and I am worried, because I just lost my 20 year old cat in August of last year and he is my baby and don't want anything to happen to him. It could be a mouth ulcer because was...