Caleb Carr has lived with cats ever since he was a young boy. He grew up in a turbulent household – where famous Beat poets, artists and addicts came and went – and his steadiest companions were pets. But only after building a three-story home in rural, upstate New York did he encounter someone extraordinary: Masha, a Siberian Forest cat who had been abandoned as a kitten and was languishing in a shelter. She had hissed and fought off all previous carers and potential adopters, but somehow, she chose him. For the seventeen years that followed, Caleb and Masha were inseparable. Masha ruled the house and the dangerous wilderness surrounding it. When she was hurt, only Caleb could help her. When he suffered long-standing physical ailments, Masha knew what to do. Caleb learned to decode much of Masha’s inner life but their bond went far beyond owner and pet.