Login into Hexawise and create a new test plan.
Click Bulk Edit in the Define Inputs tab and copy and paste the following:
Pet: Dog, Cat
Breed: Chihuahua, Doberman, Maltese, Greyhound, Chocolate Lab, Rottweiler, Dachshund, Pitbull, Bulldog, Pug, Siamese
Go ahead and click on Update.
Remove all of the invalid combinations by implementing Hexawise's married pair and/or invalid pair features.