Possible Clues:

• (Of bird) stay on nest
• A word to Fido
• Take (an examination)
• Take a load off, so to speak
• Fail to stand
• Word to a well-trained boxer
• A word to the Weimaraner
• It's recalled as a command to a dog
• It is shortly back, notwithstanding
• It is short back there, notwithstanding