Clear the High Ground

A brother? Little t? Not on my watch! If a newcomer is arriving, I need command of the room right now. I marched to the lowest shelf of the bookcase. A heavy wooden book stood slightly askew, blocking the climb. No hesitation! I slammed my blue shoulder against the spine. Clack! It groaned and shifted, sliding two inches inward. A clear foothold opened above! I dug my white claws into the ledge, hauled my segmented tail upward, and surveyed the carpet below. The high ground is claimed. Let him try to challenge the big boss!