This is a guardian breed from Italy that has a beast of an appearance with his astounding head, his opposing size, and attitude.
Once you get past the shock or your first impression of seeing one of these dogs, you're able to appreciate the animal.
Just because this dog is big, don't let that fool you into thinking it's lazy or clumsy. This dog can turn into a fierce protector at a moment's notice.
The inheritance of temperament is less predictable than the inheritance of its physical traits, and it can be aggressive, especially to another dog of the same sex or a strange human being.
Make no mistake. This large dog will display predatory behavior towards any animal that may run.
And a dog of this size and power is capable of some serious injury towards another animal or human being.
Adult males measure around 31 inches tall and can weigh up to 160 pounds.
It is said that the Neapolitan Mastiff's temperament can make him simultaneously the best and worst dog you ever own.