Punnett squares

I'm hoping someone could check my answers to these Punnett square questions.
1. In cats black fur is dominant over gray fur. Curles ears are dominant over straight ears.
          A cat that is homozygous for black fur and curled ears is crossed with a cat homozygous for gray fur and straight ears, resulting in f1 generation offspring.
 A)  If two off spring of the f1 generations are crossed, set up a Punnett sq. to predict the possible genotypes of the f2 offspring.

So what's confusing me is the "two offspring part" I did the Punnett sq using
BBCC x bbcc as P
And got BbCc as f1. Did I do that right?

B) what is the probability that a f2 offspring will be heterozygous for both genes?
       I got 1/4

Just want someone to double check, thanks!!