" Redtail groaned to himself, picturing the smug glow in the other tom’s amber eyes. What Tigerclaw had said sounded reasonable, but Redtail didn’t trust that he was really planning only to mark ThunderClan’s borders. Before Redtail could turn away, Tigerclaw pushed his way out past the lichen that hung over the entrance to Bluestar’s den. He stopped when he saw Redtail, and Redtail felt hot beneath his fur, embarrassed at being caught eavesdropping "

― Erin Hunter , Path of a Warrior (Warriors Novellas, #13-15)