How much should I feed a 22kg dog?

Resting energy for a 22kg dog is around 711 kcal, and a typical neutered adult at normal activity needs roughly 1.6 times that, close to 1,140 kcal a day. At 350 to 400 kcal per 100g, that comes to about 285 to 305g of dry food.

For a newly adopted dog, this is a reasonable starting point even without knowing the exact breed mix, since it is based purely on current body weight.

Shelter and rescue dogs sometimes arrive underweight, overweight, or simply unused to a consistent feeding routine, so expect the first two to three weeks to involve more adjustment than usual.

If your dog arrived visibly thin, feed the calculated amount for its current weight rather than jumping straight to a larger portion, and increase gradually as the body condition improves.

Weigh your dog weekly for the first month to build a clearer picture, then move to every two to three weeks once things stabilize.

Ask your vet for a body condition check at the first health visit, which gives you a baseline to compare against as your dog settles in. If contactable, the shelter or previous owner may also be able to share a rough sense of the prior feeding routine, which can shorten the calibration period and cut down on early guesswork. Give the whole household a written copy of the current daily amount too, so feeding stays consistent while everyone gets to know the new dog.