Possible Clues:

• "No SmartBones for you!"
• Reprimand on finding a shredded shoe
• Opposite of "Who's a good boy?!"
• "Out, damned Spot!"?
• Disapproving words to a pooch
• Scolding for a Scottie
• Reprimand for Rex
• ''No treat for you!''
• Reprimand after finding a chewed shoe
• Reprimand often given while pointing down