Pomeranians are typically friendly, lively and playful. They can be aggressive with other dogs and humans to try to prove themselves. Pomeranians are alert and aware of changes in their environment, and barking at new stimuli can develop into a habit of barking excessively in any situation. They are somewhat defensive of their territory and thus may bark when they hear outside noises. Pomeranians are intelligent, respond well to training, and can be very successful in getting what they want from their owners. They are extroverted and enjoy being the center of attention, but they can become dominant, willful and stubborn if not well trained and socialized. The use of toys can be an effective tool in training Pomeranians to spend time alone.