Cats, like humans, are unique individuals and each cat differs in size and weight. However, it’s possible to generalize about the “average” weight of different breeds. The Ragdolls are “biggies”: adult cats average from ten to twenty pounds and most of them closer to twenty than to ten. The Maine Coons can be even larger, averaging nine to twenty-two pounds—again, many of them lean toward the heavier end. The “generic” American cat, the American Shorthair, averages from eight to fifteen.
On the lighter side (literally), the short-legged Munchkins average five to nine pounds, but lightest of all is probably the quiet little Singapura, averaging from four to nine pounds. Not even the Ragdolls are anywhere near the record set by Himmy, an Australian tabby who died in 1986. Hefty Himmy weighed almost forty-seven pounds.