There are two different ways to breed wolves depending on their dominance. The two male and female wolves in your pack are labeled as the Alpha Pair and can only breed with each other. If you scroll down to Manage Wolf and then click Breed Wolf, you will find a button to breed your two Alphas.
Any other wolf in your pack can only breed with other people's wolves. If you go to Manage Wolf and then click Breed Wolf, it will give you the option to put your wolf up for breeding for currency, which will let other people pay you to breed with your wolves.
If you want to breed your wolf with someone else's, either find a stud you like through Sales Chat or go to Trading Post and search for wolves through there ^^
Spring Month: 1 
Night 
Clear Moon: 
