Hi Mumsnetters, it seems as though every time this year my cat Gizmo starts going bonkers with early morning zoomies and howling at her cat flap to go out. She is an 11 year old big fat tabby who is spayed but through March and April reverts to a psycho kitten. Her cat flap is locked between 6pm and 6am and she starts meowing and zooming about 4am! Cat tax for post