It’s the most unexpected guard dog you’ve ever seen. In Monrovia, California a French Bulldog has chased three bears away from its property.

The curious bears — two young bears and a “mama bear” — wandered onto the property and were no doubt shocked when they were confronted by a pup not even one third of their size.

The pup does not seem intimidated at all, and certainly got that message across to the bears.

The owner of the house and pup, David Hernandez, spoke to CBS and said that he “couldn’t believe it…she turned into a wolverine.”

Luckily the event was caught on security cameras. Watch the video above to witness the guard dog in action!

What’s the bravest thing your pet has ever done? Brag about it in the comments below!