Maine Coons are one of the largest breeds of domestic cat. Males weigh from 15 to 25 lb (6.8 to 11 kg) with females weighing from 10 to 15 lb (4.5 to 6.8 kg). The height of adults can vary between 10 and 16 in (25 and 41 cm) and they can reach a length of up to 40 in (100 cm), including the tail, which can reach a length of 14 in (36 cm) and is long, tapering, and heavily furred, almost resembling a raccoon's tail.
3. Maine Coon . . . The Maine Coon, ranking third on our list, is a true gentle giant. He generally gets along with everyone -- even dogs! -- and is known for following his family members from room to room. And you won't miss him when he does: This big-boned breed can weigh between 9 and 18 pounds! . . . Best Cat Breeds 2012: The Top 10 American Feline Pedigrees
3. Maine Coon