Chihuahuas are toy-sized dogs with a number of special nutritional needs. A Chihuahua mix that resembles its Chihuahua parent should be fed as one would feed a purebred Chihuahua. A small bite size is necessary to make it possible for the dog to eat comfortably. Top quality protein will both support the high activity level typical of these dogs and help to keep them lean, as they are prone to obesity. Dog food for a Chihuahua mix should also be highly digestible to avoid vomiting and diarrhea.
Dry Foods
Dry foods for a Chihuahua mix should be selected based on quality of the ingredients, particularly sources of animal protein. At least two out of the first three ingredients in dry food should be lean meat protein such as lamb, chicken, salmon or beef. A small bite size is necessary to make it physically possible for Chihuahua mixes to eat dry food. Some recommended dry foods are: Innova Evo Small Bites, Innova Evo Red Meat Small Bites, Wellness Super5Mix Small Breed and Blue Buffalo Small Bites.
Canned Foods
Canned food for a Chihuahua mix should be mostly high-quality meat protein, with a small amount of vegetable matter. Grain-free canned foods or formulas containing only ancient, digestible grains are desirable. Look for formulas that advertise at least 90 to 95 percent meat. One hundred percent meat canned food should not be fed as a complete diet but makes an excellent occasional treat.
Choose formulas with a relatively high level of protein and fat. Chihuahuas and Chihuahua mixes burn more calories day to day than do larger dogs due to their faster metabolisms. Chihuahuas may be prone to obesity, but foods high in carbohydrates are more likely to contribute to weight gain than those high in protein and fat. Recommended canned foods include Evangers, Innova EVO, Blue Buffalo Wilderness, Wellness and Merricks.
Raw and Homecooked Diets
Chihuahuas and Chihuahua mixes can eat raw and homecooked diets. However, it is more difficult to feed a smaller dog at home than a larger one, particularly if attempting a whole prey model raw diet. Larger dogs can eat a wider variety of meats and bones. Smaller dogs must eat mostly chicken and fish bones. In addition, Chihuahua mixes may be picky eaters and take poorly to a diet that requires them to eat many different food items.
Stick with prepared pet foods until you're sure that you understand your dog's nutritional needs and have familiarized yourself with a long list of food items and the nutrients each provides.