Thank you Jessica; I thought so; I didn't any training for Tzar; he proved himself as an intelligent superior guard by coincidence when he was about 18 months old or less; from what I saw from him, I didn't want him to feel that bite work is condoned; Tzar was a very serious dog but very kind; Tzarina on the other hand doesn't come across as very kind so I don't want her to feel the same either even though she doesn't exhibit any of Tzar's guarding ability or traits; my understanding is that the true nature of CAOs is very protective by nature; CAOs in Australia are very limited in numbers and were not manipulated until the breeder, who brought this breed to the country, decided to produce a milder strain, so that she would feel more relaxed when she receives visitors...