How to gain new dog's respect?

Have them sit close to her, and not pay attention to her. Just keep themselves busy by chatting or play a card game, or whatever. Then let her come to them. If this doesn't work the first time, just keep trying. They have to let her come to them, and they have to let her do it of her own free will. Once she thinks she can trust them, she will give it a try. And don't let anyone come near her who is scared or timid. Always calm and in control.

,If she does not have a shot or health record, your sister will need to take the animal to a vet. If it does have tags I would still get acquainted with a veterinarian. He/she can tell your sis about how old the dog is and approximately what breed it is. If it has not been spayed it should be. The most common problem with unspayed female dogs is breast cancer. Taking a dog, large or small to the vet is as expensive as caring for a child. Often the large breeds do not live long, and if it is a short hair it will need a warm winter shelter. It may be afraid or not warm and chooses to stay in its house. Tempting the dog with food treats usually will coax the dog to cooperate. There are thousands of books to help you be a good animal parent. If you choose to by only one I recommend (dog breed)for dummies. Most active dogs can not resist a ball. It may also be so used to a leash or command it is waiting. Talk to a breeder or at least the previous owner. Why did they decide to not keep the dog. They need to research the dogs history and breed. Then rule out health issues. It may miss a companion and another might be a answer. The great Danes I met are apartment dogs and really sweet when they meet my elderly Chihuahuas. They are not active for a long period of time. This is southern California and the dog parks are the only place to play. There have been several good TV shows about Great Danes. I think all else failing I would check ot the library or the Breed on the internet.

If I would be your sister i would call to an expert so the dog could feel more confortable, but I have seen in the TV that some experts tell the owners of the dog not to see them directly into the eyes because they take that look as a threatningand they should giveit some ttoys so the dog would not be bored.

tell her about this because my dad train dogs so they can live with strangers or my dad can train them to attack

It is understandable for a dog to become mildly standoffish and exhibit signs of separation anxiety when they suddenly find themselves in strange surroundings and with new people. She may have already been to obedience school. But another round wouldn't hurt. It would also give your sister and her husband a good look at what is needed to help the dog adjust to its new home. In the meantime, taking the dog for walks and playing any kind of game that you can get her interested in will help to bring her around. (Don't play tug-of-war)

Oh that is so sad. Is she losing weight? Try giving her some nice chicken bites to make friends. Does she have some toys? Just get down with her and pet her and talk with her. They are a gentle and wonderful breed and, as they learned , very sensitive. If it persists see the Vet. ( the fact that she barked at strangers is good I guess since she can distinguish from her new parents?)

The dog will probably respond to consistency. Do the same thing in the same way at the same time. It may take a while. She is traumatized, understandably. I have found that speaking soothingly to the dog helps. The dog has to learn your sister and her husband are her friends so that will take time.

Oh, my. The poor dog. Your sister is so sweet to take in this poor animal.

With patience. She should toss food to the dog and leave as many times a day as she has time to do. I sure wish the dog were tame so she could come in and learn that she is safe.

They need to gain her confidence but at the same time make sure that they show her that they are alpha "top dog". It takes time to gain trust of a scared animal, especially if they have been abused at one point or another. Give it time and patients, lots of love and obedience at the same time. They want the dog to trust them but at the same time they don't want a dog who starts to trust them and then decides to take position of alpha cause that can cause even more problems.

just be very kind and loving. and just give her time to adjust to the new home. your sister needs to spend alone time with her so she can get used to her.

be nice to her care for her later she will get use to her new home maybe find her a trainer.