Quick Conversion: 12.4 kg =~ 27.3 lbs
Personally, I think the bigger concern is giving our dogs healthy foods and judging weight by how the dog looks (from the top). Muscle weighs more than fat, so... if your dog is lean and muscular they could weigh as much or more as a dog that eats too many biscuits (cookies, treats, etc.). And, as I say that, I have had my "doodle" on a diet for over a year now. She's not obese, or even "plump", but she isn't thin either. Just something else to worry about...