We lost our cat once when she was about 3 years old. We were in a ground-floor rented flat until we could get another place of our own. I was out at work one day and Hubby (who was out of work) let our little moggie our of the glass doors in the lounge (which opened out on to a large communal garden) at just after lunch time. (She had never been outside there, before.) By the time I came back, at about 5.30pm, puss still hadn't come back in. By after tea time, she still hadn't come back and by bedtime likewise, so I went to bed convinced we'd never see her again. However, I got up to go to the loo at about 6am and then I thought I heard a faint mew from outside. I opened the bathroom window and called her name umpteen times (never mind waking the neighbours!) and then I saw her. She came hurtling across the car park in the direction of the bathroom, launched herself into mid-air and landed on the bathroom windowsill. I picked her up and she sat purring in my arms for the next half hour. One very happy moggie and one very relieved Me! (We worked out that she must have been outside, lost and probably rather scared, in the garden for 16 hours.)