How do you get to the next level in wolfquest

Depends which version you're playing and which section you're up to..... But I will answer this as best I can
In the first episode (Amethyst Mountain) you must go and meet each wolf in every territory, then you must find a dispersal male/female to become your mate. Then you go to the next episode.
In the Slough Creek episode you must first find a den to raise your pups (I used Saddle Meadows). Then you must mark your territory. Then you will have to raise your pups, feed them, defend them from predators and keep your territory defined. When the pups get big enough you will have to take them to the star on the map, you will have to defend them the whole way so look out (they can't swim). Your mate will help you feed them prior to and during the journey to the star. Then when you all get to the star, you have to howl and you finish the game! XD
Hope that covered what you were after