queenie

I have two mini schnauzers, Abe and Molly. Abe is clicker trained and behaves like an old man. Molly is the livlier one and is fairly trained. We are working on letting her in the yard without her runner. We are thinking of adopting a Great Dane from a giant creature rescue. Has anyone had any experience with small dogs and giant ones living in the same house. The rescue wants us to have a fence for the great dane before they let us adopt her. Nena (great dane) was raised in a foster home for dogs and is 9 months old. She is very well tempered and likes kids... I have 3. Any thoughts or considerations? We live on a large farm in a rural area and have lots of space for her to play and run. I would appreciate any advice or comments. Thanks, queenie