I agree with Rick. Puppys are though, but do learn very quickly. I have a 1.5 year old dog that I swear is the most destructive dog in the world so I feel your pain. Try to catch it in your lights and tell it no. then it will know exactly what is a no. Or set some old lights in the back yard and watch your dog. When it gets close tell it no and pull it away. When it walks by and does nothing reward it with a treat. I am a firm believer in positive reinforcement.