What brand of food for a 5 month shih tzu?

[Anomaly]

My dog is on asda puppy. My dog trainer has suggested that I should move onto a juvenile food. Any suggestions? Thanks for any advice.

Royal canin produce a food just for shih tzu's try royal canin shitzu junior ,
as a breeder i would not feed my dogs on any thing else ,it will show in his coat and well being .