Presa Canarios were trained for hunting and for wars during the 18th century. An attack by this dog has been described as hopeless for the victim. They have incredible power and they are really fearless animals. large Molosser-type dog breed originally bred for working livestock. The name of the breed is Spanish, means "Canarian catch dog", and is often shortened to "Presa Canario" or simply "Presa". The breed is sometimes also called Dogo Canario, meaning "Canarian Molosser". Origin: Canary Islands, Africa ; Weight: 100-125 lbs; Height: 25-26 inches.