Rottweilers can get along with any dog.
In this Picture you see 4 male dogs doing the watch command. In the left corner is my Rottweiler name Gunther. In the centre front is a Pit bull x Am Staff named Boss. In the right side is a Mastiff x Pit bull named Rajah and in the centre back is a Border collie x Kelpie name Toby.
Gunther, Boss and Toby are all the same age of 23 Months and Rajah is 7 years old. Gunther friends come over everyday to hang out and play all day.
At the end of the day they all sleep very well.