When our son moved back home after living with his mates, he brought the house kitten, Alfie, home with him. We had a cat of our own and a puppy at the time. Of course after 6 months he moved back out and Alfie stayed with us. He would have the odd night out and we knew he was visiting another family - Mrs Mottie with her bloodhound nose could smell another woman’s perfume on him! Anyway, he was gone for a few nights when we had a call from a vet - the mystery woman had taken him in to see if he was chipped (son gave our details when they got him and had him chipped). Turned out he was visiting a house in the close opposite. Anyway, the woman’s husband brought him back and was telling us how upset his wife was when she found out he belonged to someone. After speaking to our son, he agreed that if Alfie was happy there, let him go. It made sense and when Alfie was there practically full time we let them change the chip details. They changed his name to Sam too. Funny thing was, after living with them for a while he had a night out after a few weeks and by 9.00 next morning the area was blitzed with "have you seen our cat" leaflets! He’d only been missing for 12 hours! I saw him prowling in the alley behind our garden, phoned them up and saw the lady with her husband and a cat box dashing past our house to collect him. This must have been about 10 years ago and we still see Alfie/Sam stroll past occasionally - he totally blanks us when we call him though!