Why do some rich people leave their wealth to their pets?

Philippines
@faith210 (11239)
August 29, 2007 12:35pm CST
rich dogs - visual aid for discussion, original graphic art
I have heard stories about wealthy people leaving so much of their wealth to their beloved pets and a small portion to their relatives. I have just read one in the internet today. However, I do wonder why some people would choose their pets to inherit a bulk of their wealth. I have nothing against them, that is their decision,I respect that and I know they have their reasons. But I am just really wondering why? How about you, don't you at least wonder why?