Both of my dogs are mush balls but I think it's because Jim and I are ALWAYS kissing and cuddling the. We NEVER EVER EVER EVER yell or (god forbid) hit them. They've never been hungry or cold or sad because I do everything in my power to ensure that they're loved and happy. But I think I made them just a tad too mushy.
All they want to do in life is be kissed and I love it that way.