Pet Wombat Your country isn't covered yet, so these are EU prices.
A wombat looking over the top edge of the page

Purina Pro Plan Medium & Large 7+ Age Defence Chicken 14 kg

In Dry dog food.

3,860 kcal per kg and 29% protein, from Purina's page. That's 3 points more protein than AVA Optimum Health Medium Breed Adult Chicken.

What the label and listing say

SpeciesDog
Life stageSenior
Size classMedium and large
Pack weight14 kg
Energy3,860 kcal/kg (Stated by purina.co.uk)
Protein29 %
Fat15 %
Fibre2 %

Where this came from

Other dry dog food