Do Dogs Have To Be Purebred To Take The American Temperament Test (att)?

Just curious, one of my APBTs is a mix, I wanted to get her tested, but it seems it's pretty much purebred dogs
Thanks Nekkid...after I posted this question i went to the site, and noticed that...all my dogs EVEN purebreds are altered. Period...so not a problem.

-5 points for me lol!