TIP #1: HOW TO HANDLE HOUSE TRAINING MISTAKES
1. Interrupt mistakes as they are happening: Don’t be harsh or your puppy will be afraid to go in front of you (even outside). After interrupting your puppy, hustle him outside to the potty area. Praise if he finishes there. Clean up the indoor mess with an enzymatic cleaner (e.g. Nature's Miracle) to remove protein residue that might attract him to the same place again.
2. Punishment: If your puppy potties in the house, take a newspaper, roll it up, and hit......yourself over the head - because you weren't paying enough attention to your dog!
TIP #2: TRANSLATION, PLEASE
Growls are most often a warning that serious aggression may ensue if you persist in whatever you're doing, or whatever is going on around him. Rather than taking offense at your dog's growl, heed his warning, and figure out how to make him more comfortable with the situation. Dogs also growl in play. It's common for a dog to growl while playing tug - and that's perfectly appropriate as long as the rest of his body language says he's playing. If there's any doubt in your mind, take a break from play to let him calm down. Some dogs also growl in pleasure. Rottweilers are notorious for "grumbling" when being petted and playing, and absent any signs of stress, this is interpreted as a "feels good" happy sound.
- Whole Dog Journal
Jeff Dentler, CPDT-KA, IAABC-ADT, FFCP, CTDI