Hi my name is Sona I just recently bought this 10 month old Great Dane from a women who did not do a great job of taking care of him he is very hyper only cause I think he doesn't get enough exercise she told me he has his shots and stuff she just doesn't have time for him because she has 2 kids. He is so sweet and the fact that he so hyper and just to much energy for my famil only because we did not have him has a puppy and he needs some time to work on it but he is sooooo sweet does not show any type of aggression he lets you put your hand in his mouth very people friendly only when they walk in the house he barks he loves dog parks very sweet to other dog idk about cats tho but he's a gentle Giant just needs some work asking 500 or best offer