my new golden retriever

Question
Hi i have a 2 year old golden retriever named buddy.we just got a new 14 months old golden retriever and both of them are males buddy never had problems with dogs and we have a girl Maltese and his greater with her but with my new dog his very aggressive we try put them together and in randoms times they start to fight.we haven't put them together anymore because im scared they might hurt each other . I don't know what to do please help me

Answer
Are they truly fighting, or just playing?  It is the nature of young dogs to engage in rough play that looks like fighting.  Here is a link to a picture of a couple of dogs playing, http://www.photolocker.net/images/Labman/gretchenandellaplaying.jpg  If you don't have too much experience with large, young dogs, you need to have somebody that does observe them and figure out what is happening.  

There are cases where you put two dominate dogs of the same sex together, you will have trouble.  Even the most experienced dog owners may have problems.  In such a case, the first thing is to neuter them both if not already.  Then you must provide them strong leadership.  The key to most behavior problems is approaching things using the dog's natural instincts.  Dogs see all the people and dogs in the household as a pack with each having their own rank in the pack and a top dog.  Life is much easier if the 2 legged pack members outrank the 4 legged ones.  You can learn to play the role of top dog by reading some books or going to a good obedience class. A good obedience class or book is about you being top dog, not about rewarding standard commands with a treat. Start at http://www.dogsbestfriend.com/  For more on being top dog, see http://www.dogbreedinfo.com./topdogrules.htm

I seldom suggest a private trainer, but this may be a case for one.