>The Conquistadores used perro de guerra (war dogs) extensively in the Americas
>They proved to be dreadfully effective weapons against Aztec and Inca troops
>The Aztecs had only ever seen little Chihuahuas that they used primarily for food
Imagine you are some Aztec who had never seen a domesticated predator before and some tall, white, Spanish Chads show up with 200 pound armores Mastiffs that rip your chief's throat out