the flood water had caused the door to snap shut and as wheatsheaf races along the hallway to rescue his beloved animal , he is relieved to see , as he pushes the door open , his tiled floor swimming in an inch or so of receding water mixed with the soggy paste remnants of cat food and biscuits , and his scared and startled friend frantically toing and froing on the work surface onto which it had instinctively leaped for safety when the water struck .