Since you need a pet to be homozygous in order to have a chance at being a deviant, shouldn't the offspring be that same color as both the parents? Or do each of the parents have to be homozygous? Because I used my 100% DCA on my puma Nala, and bred her with another male. Both parents had the pattern for a gray tiger. Her cub Nala, had the pattern for a black tiger. Shouldn't Eva be a gray tiger, or did I do something wrong and waste my DCA?

Sorry to say it but you wasted your DCA. You should have waited until you had two parents with homozygous color/pattern genes.

In Eva's case her parents might have been the same color/pattern but a check of her grandparents reveals that they couldn't have been homozygous.

Oh okay. Thanks for your help.