What do you feed your Beagle?

What food do you feed your Beagle? Right now at just 7 months she is still on Purina Puppy Chow healthy morsels. She is getting a little on the fat side for me. But, I want to keep her leaner for showing. Her daddy is an AKC show Champion, and mommy is from AKC feild lines. But she is a beauty! She will be a 15 inch beagle at maturaty. I have a baby gate up where the computer is so she can not get in to the cat food. Dingbat still hopps the gate and gets into the cat food though!