I recently adopted another dog so my first dog would have someone to play with. I adopted both from my local pound. My first is a boxer the new dog is a golder reteriever.

The boxer has been decently trained and has basically no aggression what so ever. Anything he did have how ever so slight has been broken.

I brought the boxer to meet the golden prior to adoption to make sure they would get along. They seemed fine together.
Now when I feed them for the first time the golden will snap and growl if he boxer comes near. Nothing towards me I tested this first.
Not only food bowls but say i'm handing out treats to both. the golden won't let the boxer stand next to her with out her showing her teeth if he comes to close. Otherwise they are fine and do thier own thing.

She is fairly skinny and will probably gain 20lbs. she is skin and bones.
She is gentle and loving thats why i chose her. she wasn't the wild histericle dog when I walked in. she just wanted love.

I am a full believer in the pack relationship I make sure they know i'm the Alpha.

its only been 3 days since we got her. But last night my boxer growled at me when i hugged him and he had his toy.

You just had your new dog for a few days. Give him some more time since you new pet is still adjusting to the new environment. Make him learn how to trust your boxer, as well as you. Also, for the meantime, observe them so that you can prevent a fight if ever. But I do hope they will get along just fine.

To some extent, yes you will want to give her some time to adjust. BUT, resource guarding should not be tolerated. Even though the dog is resource guarding against the other dog and not you, I don't think it is wise to tolerate the behavior.

There have been a number of posts made with advise on dealing with resource guarding, you can find them by doing a search for "resource guarding". You might also want to google the same search...there is lots of advise out there on dealing with it.

I'd give it a week or two so that your dogs can establish their "rankings" - after that it should be fine.

It is very important that you supervise them closely, (100% eyeball supervision) whenever food is involved, and make sure they are separated (put their food bowls several feet apart from each other, even in opposite ends of the room, if possible) when eating. Whenever food or another trigger is involved, make sure you have your body between them at all times, ready to keep the Golden's head away from the Boxer, so she can't attack him.

In the meanwhile I have another technique to offer you, for treat procedure: Sit at a desk, or table, preferably, with a dog on each side of you-- your knees will serve as a barrier, keeping them separated. Hand out treats, generously. ("One for Boxer, one for Golden; one for Boxer, one for Golden...) over and over, repeatedly. The only thing they have to do to "earn" the treat, is to sit there and be civil to each other-- they don't have to like each other, or shake paws, or kiss, they just have to refrain from displaying aggression.

My second dog, a recent adoption, had been seized from her previous home by rescue, because she had been starved, neglected, and abandoned. So naturally, she displayed some aggression, attacking my first dog, whenever food or affection was involved. My family and I used the techniques I just described to you, and within five days, the two girls were "sisters." The other night, they actually shared licks in my husband's ice cream bowl, when he was finished with it-- they both had their noses in that little bowl, at the same time!

Now, I agree with the pack hierarchy stuff-- to a point. However, very sensitive dogs require very gentle handling, and tact. If you are too stern with your "alpha" philosophy, it could backfire on you, and cause more problems, like a very timid, phobic dog.

Here's an example: Just this morning, my "new" dog attacked my first dog-- emotions were getting a bit high is all, even best friends have arguments sometimes, and they may have been a bit tired and cranky since I kept them up most of the night (I have a nocturnal schedule, which I maintain on my nights off). High value treats had been involved.

So anyway, I was right there, so I was able to break them up quickly. I restrained the attacker while the "victim" retreated. Then I proceeded to usher the attacker into her crate for some cooling off time. But she herself was every bit as stressed out and frightened by the whole thing, as the other dog! She would not go into her crate; she was just too stressed (the crate needs to be a sanctuary, not a punishment). So I sat down on the floor at the opening to her crate, and let her come out. I just sat there with her, with my arm around her, to help her calm down. Then I called the "victim" dog over for some reassuring too. It worked. Nobody was hurt, by the way-- at least not physically. There were definitely some hurt feelings, though. After a nice long chilling out, they are both back to their affable selves again. They are both napping now, both at my feet.