#10 Three of them have the same name
#9 Your monthly order of kitty litter arrives in a dump truck
#8 The Urine Off head office has a statue of you in their lobby
#7 You've spent at least one night sleeping on the floor because there was no room left in your bed
#6 When you shop for cat food, the store has to hire temporary workers to help restock the shelves
#5 You think six cats is a "starter kit"
#4 You took our your car's seats so you could fit in more carriers
#3 The words "Anal Glands" don't make you laugh like they used to
#2 You just coughed up a hairball
And the number one sign you might have too many cats...
#1 Your vet drives a Lamborghini