My mom brought this question up because one of her coworkers is a dogg sitter. The Coworker said my mom was crazy for letting out dog out every 4 hour to 5 hours. She said she takes them out every 8 to 12? Which person is right? Edit: People keep saying "when they bark..." So let me revise this. My mother works around the corner from home. She comes home on her lunch break to let the dog out. The Coworker will be gone for a/b 12 hr stretches.