If your puppy is showing fear or aggression towards other dogs, it's important to address this behavior early on to prevent it from becoming a habit. Here are some steps you can take:

1. **Stay Calm**: Your puppy can sense your emotions. Stay calm and composed to help reassure your puppy.

2. **Avoid Confrontation**: If you know your puppy is fearful or aggressive, avoid situations where they might encounter other dogs until you can work on their behavior.

3. **Desensitization**: Gradually expose your puppy to other dogs at a distance where they feel safe. Reward them with treats and praise for calm behavior. Gradually decrease the distance over time.

4. **Positive Reinforcement**: Use treats and praise to reinforce positive behavior when your puppy interacts calmly with other dogs. This helps them associate other dogs with positive experiences.

5. **Socialization**: Introduce your puppy to well-behaved, calm dogs in controlled environments. This can help them learn appropriate social behavior.

6. **Training Classes**: Consider enrolling your puppy in a training class that focuses on socialization and basic obedience. A professional trainer can provide guidance and support.

7. **Consult a Professional**: If your puppy’s fear or aggression is severe, consider consulting a professional dog trainer or behaviorist who can provide tailored advice and strategies.

8. **Health Check**: Sometimes, fear or aggression can stem from health issues. Make sure your puppy is healthy by consulting your veterinarian.

Remember, patience and consistency are key when addressing fear or aggression in puppies. With time and proper training, many dogs can learn to feel more comfortable around their canine counterparts.

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Topics covered in this question:

Socialization Training Tips Canine Behavior Puppy Behavior Dog Aggression Dog Fear