If your dog growls at the baby, it could be a sign of a problem that needs attention. Here are some possible reasons for this behavior and how you should act:

1. Apprehension or fear
Reaction to a new situation: Dogs may feel uncomfortable or scared when there is a baby around, especially if it is a new baby in the house.
2. Defense of territory
Territory defense: Dogs may feel their territory is threatened by the baby, so they growl to keep him away.
3. Discomfort or pain
Medical condition: If the dog is in pain or uncomfortable, it may show unusual behavior, such as growling.

4. Impatience
Impatience: Dogs don't always understand the baby's behavior and growl to express discomfort or impatience.
what to do
Observation: follow the dog's behavior and try to understand what makes him feel uncomfortable. Are there certain situations where he growls more?

Gradual exposure: if your dog is not used to babies, it is important to expose him to the baby gradually. Let the dog get used to the smell and sounds of the baby in a controlled way.

Positive reinforcements: When the dog behaves calmly around the baby, give him positive reinforcements such as treats or compliments.

Professional training: If the behavior persists or worsens, consider contacting a professional trainer or veterinarian for advice.

Separation of spaces: If the dog fails to get used to it, it may be necessary to separate them until the dog learns to feel comfortable with the baby.

Summary
It is important not to ignore the dog's growls, as it can indicate emotional or medical problems. Keeping the baby safe is a priority.