Because they do.

Sneaky cats with their big vocabularies and intellectual powers will try to convince you otherwise, but do not be fooled. Dogs rule. After all, are these Henry and Wahoo's Kookies? Are they Grace's Kookies? Are they Lucy's Kookies? Are they Any Other Cat's Kookies?

No, they are not.

They are Kakoa's Kookies. And that is one of the many reasons Why Dogs Rule.

Stay tuned for many more reasons Why Dogs Rule.

Your loyal and faithful friend,
Kakoa,
of Kakoa's Kookies

(The Dog Who The Kookies Are Named After)

P.S.
Yes, cats can eat and even enjoy the Kookies but that is about as far as it goes for them except in their own kitty minds.