hiya im askin this on behalf of a friend of mine who is having a problem.
she has got a 1 year old lab bitch and the problem my friend is having is leelo is very protective over her food she will snap and growl at anyone who goes near her when she is eating but apart from that she is very loving and not aggressive at all
now my friends housemate has recently got a little white boxer puppy who is male and leelo has become alot worse not just with her own food but with any food she feels the need to protect it she has bitten the boxer puppy who got a little to close to my friend while she was eating.
so does anybody know we can solve this problem as my friend is gettin very distressed about the whole matter

This is a problem that really needs a reward based behaviorist to come in and assess the situation and advise having done a full assesment as trying bits and pieces of advice from here and there may just make the problem worse.  If you say the general location your friend is in someone on here may be able to reccommend someone. 

In the meantime she needs to make sure that the lab is kept spereately from the boxer pup at food times as this is the last thing a young pup needs.  She also needs to make sure that feeding treats, chews, bones etc are done seperately it may also be necessary to keep them apart for a while after feeding times as resource guarders can still remain on edge for a while after the food is gone.

Hi
I rescued a Belgian Shepard bitch who was a nightmare over her food bowl with my young son when she was eating. The way I calmed her was to put her dinner down obviously only the dog & myself in the kitchen and I would not make eye contact and do my dishes, I would throw small pieces of cheese or sausage down near her bowl but not moving from my spot as that can trigger them off. If she just ate the extra I would say good girl in a soft voice. All this takes a long time for the dog to trust you but eventually I could say her name and put the food into her bowl and she was good about it. I never did let my son go near her at all at feeding times or my other dog my bull terrier.

I would seriously get your mate to talk to her vet and find a dog behaviorist or maybe a good dog training book before the boxer gets any older as once he gets to be a big lad will not back down and fights will happen over everything.  A local dog training class would be good for both housemates to take the dogs to together as well. Once you start basic obedience if things do get volatile its so much easier to get control of dogs that get arsey with each other. 

http://deesdogs.com/documents/resourceguardingandfoodgame.pdf

This may help.

The best book on this is Mine!  A guide to resource guarding in dogs by Jean Donaldson which has a full and detailed programme for food and other guarding.