About a 1/3 to a 1/2 cup of premium dog food a day depending on the size of your Chihuahua. A 4 pound Chihuahua will not need as much as a 6 or 9 pound Chihuahua. Break it into two meals. If your Chihuahua starts gaining weight start cutting back just a bit. Read the label on your dog food. Some of the premium foods are higher in calories and you need not feed quite so much.
Twice a day. Not to much... Have a small food bowl.
I say you should feed him/her 1/2 cup of wet and dry puppy food mix 2 times a day. Once in the morning once at night.
1/3 cup 2x's per day it should be a mix of wet puppy and dry puppy! Please feed your baby the best as well. Like beneful is horrible!!!!!! Thats like you eating mcdonalds everyday! Yes they love it but wouldnt you it has bi products and food coloring to attract them. It I the worst food they can eat! Also do not feed your dog , food that contains corn either it cannot be broken down when digest! When you mix the wet and dry it should add up to 1/3 all together!