Duskfire Glacier Can we climb this mountain?

He was alone for a while before he picked up the scent of another. Tuulu tracked it through the field, noting that it mixed with his brothers own scent. He thought maybe they were together, but as he tracked the boy farther, he realized the alpha's scent was older and he put the pieces together. Lane had told him of the child's anger, of the other son of Wintersbane and how he planned to take over when he was old enough. The northerner wondered if that was also Ensio's plan. 

When he caught up to boy, he slowed and greeted him with a chuff. Tuulu had no intention of bringing up the fact that Ensio had marked over Isso's scent. It was not a battle worth having, and as long as the borders got marked, he thought it didn't matter much who was doing the marking.