Was this dog's reaction justified?

Yes. Dutch Shepherds are highly trainable, sharp of temperament yet stable of mind. This dog is obviously bite trained. She gave a command to stand down an intruder and he did. Every woman in the UK should have one and never leave home without it.

The dog did exactly as it was trained. That guy is lucky she didn't release the dog.

This dog is starting to pickup on its owners uneasiness.. such a good boy or girl! Love dogs, we don’t deserve them.

Staged, but exactly how it should happen.

Dogs can sense stress in their owners, and the dog could tell that the man was entering her free space without permission. Justified and dogs are your best friend if trained right, and a protector. Good Dog. ❤️🐶🍖

Well she did warn him and he didn’t listen So yes

Under Zohran Mamdani, women in New York will need dogs like this.

Definitely. This is direct harassment and borderline scarey. She warned him and gave her dog the command.

That was a command given and followed through by the dog, not a reaction and the dog is awesome!

Sometimes dogs react to things we can't see or understand. A sound, smell, or memory might trigger them.