These are calm but alert dogs, which are specially well suited to guarding and, traditionally, to driving cattle.
About the Canary Mastiff
This is a robust and well proportioned medium-sized breed with a distinctive black mask. The body is longer than the height at the withers, a feature that is slightly more pronounced in females.
Canary Mastiffs are well-balanced and very sure of themselves. Obedient and docile with the family, they grow very fond of their owner, while treating strangers with suspicion. They are self-assured, noble and a little distant, but very firm and vigilant when alerted. Their bark is low and deep.
Source: key facts and characteristics sourced from Fédération Cynologique Internationale (FCI)