- Dogs may dig at carpet when they're trying to bury food or a treat to save for later, and they may even push imaginary dirt over the item. Make sure nobody moves the dog's unfinished treats for the dog to feel secure enough not to "bury" them.
- Dogs commonly turn in circles before lying down, an instinctive behavior involved in making a nest. The dog also may dig at carpet as part of this behavior. Try supplying the dog with a rug it can nestle in instead of the carpet.
- Certain dog breeds, such as terriers, were developed to dig for prey in underground burrows. These indoor dogs may feel an instinctive need to dig at carpet. Exercising them with walks and games can help.
- Indoor dogs may dig at carpet for the same reason some outdoor dogs dig holes in dirt--out of loneliness or frustration at being left alone for long periods of time.
- Some dogs dig at carpet when they are stressed or afraid. This may occur because of separation anxiety, for example.
- Working breeds, such as collies and shepherds, may feel an instinct to round up livestock during a thunderstorm. With no appropriate outlet for this energy, they may start digging or doing other destructive actions.
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