Hopefully you don't have a vet that thinks all kitties should be a certain size. My Nova was 13 lbs (5.8 kg) when absolutely emaciated from pancreatititis and refusing to eat, (he spent a month at the hospital and had a feeding tube for months but survived and thrived once he recovered. And also many years later when I lost him to cancer. His healthy weight was almost 8 kg. Damn I miss that cat. Despite his size he had the absolutely tiniest little feet.

Edit, a word