Your new cats are lovely (though I see what you mean about the pot belly). Weight does vary according to breed. My husband and I have a Norwegian Forest Cat, a variety that can grow to 20 pounds (or more). Emperor Horton is 18.5 pounds -- sorry, I don't know how to put that in kilos. I have a great scanned photo of the shaggy black & white beauty, but I don't know how to put an attachment on this message, being new to the site. [PS: I review for Locus and really like your writing; pity I don't get to see more of it.]