William does fine with his harness, but he's used to having a collar on.

Tiger hates it and doesn't understand why he would need one - "I'm a good boy...I would never R U N N O F T !" Yeah, right!

Norbert never goes outside. If he ever gets out, I don't know how we would get him back in - don't want to think about it.

Percy absolutely cannot stand a collar (completely freaks out) so being college graduates, we figured he wouldn't do well with a harness. He doesn't go out either.

And Pippin, well if we need to put a harness on a blind cat to keep track of him...then WE need to get our eyes checked!