Well they eventually become pals, but until, you just keep pulling them apart from each other.
Buy a new dog
they fall asleep next to each other, that's it
No. There is no way to make puppies on Nintendogs.
I have Nintendogs and my dogs playfight all the time. I dealt with it by playing with them individualy at first and then re-introduced them to each other later.
Nintendogs bond why you see them sniff each other and they lay on top of each other. That is how they bond.
Keep them away from each other.
None. If your asking this because you want to breed your dogs, you fail. You cant breed your dogs, and this is a nasty question, quite frankly.
This is something that comes by instinct to dogs. They are trying to dominate each other and no, that's not bad. They are not hurting each other they are just play - fighting. My 2 dogs do this all the time.
you separate them to you think they are ready to be with each ohter again
They need to do it themselfs.
Same reason why you lean on other people they get lazy and/or tired and need something to support they're weight.
No, male dogs will often play and run with each other. Fighting between male dogs will usually occur when they are in competition for the same female in heat.
They do it themselves if they like each other.