My dogs eat a complete biscuit mix. Comes in a 15kg bag and is 7 odd quid.
My male staff Frank has tuna in sunflower oil with his every now and again and I decided to weigh him earlier and he weigh's in at 25kg. Average weight for a staff is suppose to be between 11 and 17kg.
And at the minute crystal my bitch staff is on biscuits with puppy meat as she's just had a litter of pups.