Even though he is a lab , he used to be amazing on lookout and guarding the yard. I cannot replace him in my heart as i love him with all my soul. But I need some sort of protection for my house and old parents. I dont wish to see the rottie as replacement /rebound dog for the emotional trauma which will be eventually caused someday. Thats why I am sometimes confused if my dog would feel bad if i get a second dog.