Poor Trixxie is minding her own business when a wild coyote comes out of the bush and attacks the tiny pooch.
Luckily for her, however, her friend and next door neighbour, Happy, the Rottweiler, heard the commotion and ran to her aid.
The footage, which was recorded in 2010 but has only just been released has now gained over 1 million views.
We think Happy deserves a medal for being so brave.
You may also like: Sneaky lion cub scares off canine friends