If they do, it could be because they want to feel more like part of the family, or it's just a particular animal's personality and that animal was matched with the person meant for it.
@AJs:
See, Dan? First you tick everybody off, now you make everybody cry.
But you're still not getting off the hook that easy. You will NOT be banned and in fact will be required to stay. :D
What?! That's it I'm going back to my stupid jokes!
I saw this show for the first time last night. I didn't think it was sad, because the nice doggy gets adopted into a home where the people have been evaluated and dog is placed with people who are best suited for the individual dog. It's like a reality game and they all know only one home gets the dog. The people know they might not get that dog. But I'm glad that the people who don't win on the show, will probably adopt and rescue another well deserving dog. Just my take . . . but I only saw the one show.