Highly trained knife attack prevention dog

That dog is having a blast with her friend in the wrestling suit. Her tail never stops wagging.

but though would be effective to let the owner escape, the dog grabs the assailant near the elbow both times, from there, the attacker can stick the knife in the dogs neck

So, the dog is trained to be suspicious of men in puffy suits?

I wanna see you shine in the light like the diamond you are...