Cmdr. Samuel Vimes and Hobbes posing for the camera.
They are both Maine Coon cats and are still growing. Sammy is 2 years old and Hobbes is only 9 months old. They are terrific companions for each other and are great fun to watch.
From Wikipedia:
Maine Coons are the second largest breed of domestic cat. Males weigh from 15 to 25 lb (6.8 to 11.3 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 48 in (120 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. The body is solid and muscular, which is necessary for supporting their own weight, and the chest is broad. Maine Coons possess a rectangular body shape and are slow to physically mature; their full potential size is normally not reached until they are three to five years old, while other cats take about only one year.