We have just adopted a 2.5yr old cat - she has been with us for 5 weeks. Settling in well overall but between the hours of 2-6am - she goes crazy. We sleep downstairs and she runs wild upstairs on our wooden floors and it sounds like an elephant is running back and forth. She used to be an outdoor cat at night with previous owners but we have changed that. We leave her out for as long as possible at night before we go to bed, then bring her in and I get her up a few times during the day and put her out to try and keep her awake. Anyway, from what I have read in the forums, there is probably not much we can do but if anyone does have a good idea - love to hear it. Thanks.