Hi, Mickey and Piper have been getting along really well with our "guest" chi. They all seem to love being together. However, yesterday I gave them each a trach and Mickey and Piper both became really overprotective and growled much more than I have ever heard them growl. The guest, Omari, is very submissive and wouldn't ever steal their treat. Should I stop this? What's the best way? Just take the treat away when they growl, or is there a better response? Thanks for the great advice I'll know you'll give me.