I know this might sound like a cliche answer and many people might even have the same passion, but honestly, my one true passion is CATS.

There is nothing else in this would that makes my heart melt like a cat.

For example: Seeing "road kill" doesn't effect me too badly unless I see a dead cat.
Homeless dogs or other pets don't effect me any where nearly as much as homeless cats.
If I get bitten by a dog grooming customer I have no patience for unruely behavior, but when a cat grooming customer bites (even though the bite is likely to be worse) I just can't get as furious.
I've never met a cat I didn't want to smooch.
And I feel so bad for the ones who aren't loved.
I want to help them all, they are God's perfect creature.

If this offends any dog owners, sorry, but this is who I am. Even though I groom for a living, when I go home, it is the cats that rule and if I don't even see another dog until the next day at work, all the better. I know a few "dog" people who have the exact opposite feeling as me and I accept them.
(I just don't understand them...hee hee)