Our Aussie does have separation anxiety issues, braking, biting, and taking commands. She stresses hand commands over words 9 time out of 10. Used in conjunction with each other and one syllable word is absolute best and unique. Do not use commands interchangeably as it will just confuse. Aussie have 9 unique barks, once you realize this then issues begin to get smaller and guessing what is needed much clearer which Dr. Diaz has instructed.