The simple answer is: yes, Maine Coon mixes can get quite big! Maine Coon mixes come in all sizes, from the tiny teacup size to the large, regal cats. Though the average Maine Coon mix weighs between 10-15 pounds, it is possible for them to reach up to 20 pounds or more. Maine Coon mixes can be just as big as their purebred cousins, which can weigh up to 25 pounds. The size of a Maine Coon mix will depend on the other breed in the mix. If a Maine Coon is crossed with a large breed, such as the Persian or the Maine Coon itself, the kitten will be larger than if it is crossed with a smaller breed like the Siamese or the Russian Blue. Additionally, males are typically larger than females, so if you're looking for a larger cat, you may want to consider a male.