When it comes to dogs, chihuahuas are among the least intimidating of breeds. While they may have a loud bark, all that sound doesn’t usually come with a lot of bite. Most people chose to keep chihuahuas as pets for their sweet demeanor, but rarely are these tiny pups selected for their guard-dog abilities.

One little chihuahua is here to prove that he too can protect the family from danger, and when you see the incredible footage you may have a new opinion about these unassuming pets! When Charlie the chihuahua’s family welcomed a litter of kittens, the tiny K-9 immediately fell into the role of their protector. But it isn’t until a big black dog comes along that his bravely is put to the test.

As Roxy the dog curiously approaches the four kitties, she quickly learns that she is going to have to get past Charlie first. Completely unaware of the chihuahua’s bravery, Roxy finds out the hard way that the kittens aren’t hers to play with. What cameras capture next quickly goes viral, as the tiny pup selflessly puts himself between the kittens and the potentially dangerous dog. See the incredible footage for yourself in the video below – I’ve never seen a chihuahua do this before!