« on: Jun 11, 2019, 08:20 »
Hello and welcome to the forum MilosMummy. It's best to rule out any obvious cause of itching first so it might be useful to take your dog to the vet for a checkup. They will look for fleas, mites and bacterial infection of the skin. The itchiness could also be due to environmental reasons. An occasional bath using a gentle, hypoallergenic shampoo or even just rinsing the dog with warm water will help to get rid of pollen, grass seed etc.
Regarding food, you don't mention which Royal Canin variety you are giving but in general they don't score particularly highly on the Dog Food Directory but check that for yourself. Shingigz is correct in that it is useful to slowly work through an elimination diet. This is best done using wet food with very simple recipes. Grain free diets are popular just now but not always necessary. Recipes containing brown rice can be suitable.