Pixie, my 100lb Rottie/German Shepard, and Hawke, my 1lb cross-beaked Easter Egger, are besties. Even though Hawke is kind of a jerk to her, Pixie takes it. When she's had enough of the pecking, scratching, etc, she'll get up and leave and Hawke will look all dejected. I got lucky with Pixie.
Regarding training for your pooch, I echo the comments regarding condition training. Maybe add a little CBD oil to his diet. A friend of mine says it works wonders on her high-strung chihuahuas.

Regarding training for your pooch, I echo the comments regarding condition training. Maybe add a little CBD oil to his diet. A friend of mine says it works wonders on her high-strung chihuahuas.