You have unfortunately come to the site when a bunch of the established more knowledgeable members are done being polite because our politeness and willingness to help has been taken for granted and shit on. I apologize to you for my harsh tone. You must realize taking a dog like a sarplaninac or a co based on experience with a rottweiler is not the smartest of ideas for what I would think are obvious reasons. Completely different set of rules concerning raising, selecting, training, feeding and care on your part, and a completely different set of instincts based upon breedings of the past, different rules of engagement, different levels of respect and love and devotion, different outlooks upon the relationship with the handler, different criteria for warning respect and many many more I haven't listed on the DOGS TERMS. You really need to spend considerable time around these breeds to grasp what exactly they are. I'm sorry but a day a week in a park is not nearly enough exposure.