No, Frenchies are not aggressive. They are a happy and friendly breed. Given correct training and socialization as puppies, it is unusual for a Frenchie to display aggression towards people or other dogs.
If your Frenchie growls at you or starts to seem aggressive, there several possible causes, including:
- Fear – of a person or another dog, of thunder, of a new situation.
- Dominance – it may be trying to establish itself as the pack leader.
- Stubbornness – it just doesn’t want to do what you want it to do.
- Frustration – if it can’t achieve what it wants.
- Illness – if it’s in pain or distress, it may be trying to avoid being touched.
A veterinarian will be able to diagnose the cause and suggest how to correct the behavior.