best food options for miniature fox terriers

Question
I recently got a miniature fox terrier who wont eat his purina puupy food, but loves my cat's food.  I read it may be bc he is trying to obtain nutrients he may be lacking and bc it probably tastes better....Can you recommend a few food options for my puppy?

Answer
One home made diet for dogs that I have personally used and with good success is to mix 1 cup of ground beef/chicken 1 cup of rice and 1 cup of frozen peas,and if you wish you can mix yams(sweet potatoes)and kelp into as well

And for a small dog such as this,probably half a cup a day will be fine