Jakal is a very handsome Basenji boy! 😉
I agree with everyone else…. a closer photos of the bumps would be helpful. From afar it kinda looks like hives, but I can't be sure. I'm sure someone will be able to help!
Also, Royal Canin has grains in it which many many dogs are sensitive to. I gave it to my Basenji when she was little, but after a few months I could tell it wasn't really working for her. It is not really the best dry food in general. Have you thought about Orijen? I know you can get it there, it has no grain - only meat and vegetables. I find that sight hounds like Basenjis do excellent on this high protein zero grain diet.
I found it here for Italy:
http://www.zooplus.it/ask?query=Orijen&num=20&form=Ricerca