That comes under 'don't ask awkward questions'. Many things, like babies, animals etc., come and go - where is Dot's black cat?? And being with the breed, I'll never forget the Basset Beales had (I think it was them) which came and was last seen scooting round the corner. Lady Di is seen, occasionally. I think Roxy had a Boxer at one time - neither around now. Even if the animals are around, nobody is seen feeding them or letting them out to empty/walk.