Let's see, around here it's:

Wesley - biggest and the strongest, he doesn't even excercise, and he's mine.
Dinah - The loudest one, also the second-smallest.
Puffy - The biggest female with the thickest topcoat. Allergics watch out.
Spooky - The most violent one but also the sweetest, kind of a yin-yang thing
Bella - The one that hides.