Whoa! That IS scary. I've not heard of that breed, will have to look it up. I wonder if he had a seizure or something...anyway, I'm afraid that dog would be gone. Maybe back to the breeder. Have they had it very long?
My youngest daughter's boyfriend has an Anatolian Shepherd--HUGE dog. He is a herd dog, but boyfriend has him in the HOUSE...sometimes,
I seriously do not trust this dog -- you can tell by the way he 'watches' you when you get up or move around. He probably weighs 150-200 pounds.
I found the info below and thought I'd post it and because it's almost identical to the temperament of the dog I was talking about above. Daughter's boyfriend is not a forceful or dominant personality--I think that these breeds NEED to have a dominant person that they look up to as a leader. The other thing is that your friend was on her hands and knees, which was probably a submissive posture to this particular breed and he was showing his dominance. Jeez, that is just scary!
The Louisiana Catahoula Leopard Dog is independent, protective, and territorial. Loving with their family and all people they know well but can be reserved with strangers (this would include strange children). Socialize them well preferably at a young age. They need to be allowed to come up and smell a person. They mature right around 2 years of age. Affectionate with his master. The Catahoula is not recommended for an owner who does not take the pack leader issue seriously. For the right owner, who understands the importance of structure, leadership, and exercise the Catahoula can make a wonderful pet. The objective in training this dog is to achieve a pack leader status. It is a natural instinct for a dog to have an order in their pack. When we humans live with dogs, we become their pack. The entire pack cooperates under a single leader. Lines are clearly defined and rules are set. Because a dog communicates his displeasure with growling and eventually biting, all other humans MUST be higher up in the order than the dog. The humans must be the ones making the decisions, not the dogs. That is the only way your relationship with your dog can be a complete success. This breed needs a dominant owner who shows strong leadership.