Okay .... since I "need" one of those cute nightgowns for Sadie, I had better start guessing.....what is invading Purecanine?
Could it be.....
Fleas or is that spelled fleece

Bully sticks -- ewwwww
Treats Mmmmmmm....
Ed Hardy (growl)
PetFlys (bzzzzzzz....swat!)
Space Invaders (hmmm maybe that would come under the heading of the already guessed "aliens")
Underdog (never fear....)
Catz -- Felix, TopCat, Tom, Garfield????
Frogs -- ribbit
Buffalo -- now these are stinky beasts!
Pot-bellied Pigs (OINK!)
or maybe ......... it's a new grooming product?
Okay that is my first round of guesses.....but I feel more are coming....