I would try to not look at the dog or talk to it or try to touch it for a few minutes. Walk in, slowly but purposefully and get your self a drink or change your shoes or whatever. Act like you are in your own world and that doesn't include the dog. The dog will get the message.
If the dog is barking with your noise opening the door then just open the door a little and let the dog get your scent. Once it realizes it's you it should relax. Might take a little time. Open the door more walk in.
BY doing this the dog will not associate your entrance with any excitement and will see your entering the room as relaxation.
Also when you arrive do the same ritual, as above with whatever suits you. When the dog is comfortable, go out again and repeat the process. Walk in the dogs relaxes, walk out and repeat a few times.
The dog should start to expect you and remain calm.
Make sure your future interactions are on your terms. It comes down to your energy, your knowledge of dog behavior and the temperament of the dog. Is fear of a dog rational? Is fear of dog gonna increase chances of bite from dog? You have to try to develop a healthy respect between your self and dogs. They can bite, but your behavior is very influential in the process and you can avoid a bite or tension by knowing how to show you are no treat to a dog.
The more you learn about dog behavior the more you loose the irrational fear of dogs. Then you realize you are stronger then the dog and simple body language does communicate this to the dog. When you encounter a dog if you look at it you are challenging it. If you ignore it and look to the side you are saying there is no challenge. The dog can view you and realizes that is a big predator, it can walk to you and smell you and you won't flinch. You reinforce the fact that you are not a threat and the dog trusts you and accepts you. It respects you and you show it, you respect it. Hope that makes sense, hard to explain.
Last edited by MadLab; 09-06-2013 at 02:49 PM.