How do you find a den in WolfQuest?

there are 3 green dots make your wolf run to one then a notice will pop up and say look at the den when you have a look at the den you decide if you want to buy it (joke)

if you don't like go to another place
To find a den, you have to have a m8. If you have done tht then go into the middle of one of the green spots on the map and there you will find your cave! Accept the 1st cave you come across, they are all the same!