Food & Nutrition · Vet-Formulated

How do I choose the right food for my dog or cat?

Choose the right food for your dog or cat based on four factors: life stage (puppy/kitten, adult, senior), breed size (small, medium, large, giant), activity level (sedentary, moderate, active), and any medical conditions requiring a prescription diet. Always check the AAFCO statement on the bag to confirm the food is nutritionally complete. Use the Breed & Life Stage Matcher below for a personalized recommendation — and every prescription diet is verified by a licensed PharmD before it ships.

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Healthy dog eating vet-formulated food on a rural property
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What food should I feed my pet?

The Breed & Life Stage Matcher recommends a food formula based on your pet's species, breed size, life stage, activity level, and any special nutritional needs. Every recommendation includes AAFCO compliance status, calorie target, and a matched formula from the Rural King Pet Pharmacy catalog.

Recommended Formula
Hill's Science Diet Adult Dry Dog Food
Matched for a medium adult dog with moderate activity. Complete and balanced for adult maintenance — AAFCO compliant.
Daily kcal: 1,120 Protein: 25% Fat: 15% AAFCO: Adult Maintenance
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How much should I feed my pet?

Daily feeding amount depends on your pet's weight, body condition score, and activity level. Use the Calorie & Portion Calculator to get a starting recommendation — then adjust based on body condition over 4 weeks. Most feeding guides on the bag are starting points, not exact numbers.

Body Condition (1 = very thin, 9 = very obese) 4 — Ideal
Daily Calorie Target
1,120 kcal/day
Based on your 40 lb adult dog at ideal body condition and moderate activity. For a 30-lb bag at 380 kcal/cup: 2.5 cups per day, one bag lasts ~30 days.
2.5 Cups / day
30 Days / 30-lb bag
12 Bags / year
⚠️ This is a starting point. Weigh your pet every 2 weeks and adjust by 10% up or down based on body condition.
Nutrition Label Decoder

What does the AAFCO statement on pet food mean?

The AAFCO statement is a legal claim on the label that says the food meets minimum nutritional requirements for a specific life stage. If the statement is missing, the food is not nutritionally complete and should not be a pet's primary diet. Here's what a real AAFCO statement looks like — broken down piece by piece.

Example statement "Animal feeding tests using AAFCO procedures substantiate that Hill's Science Diet Adult Dry Dog Food provides complete and balanced nutrition for the maintenance of adult dogs."
"Animal feeding tests using AAFCO procedures" The strongest type of AAFCO claim. It means the food was tested on live animals under AAFCO protocols, not just formulated on paper.
"Provides complete and balanced nutrition" The food meets all minimum nutritional requirements for the stated life stage — protein, fat, vitamins, minerals, and amino acids.
"For the maintenance of adult dogs" This is the life stage. Common life stages: Growth (puppies/kittens), Adult Maintenance, All Life Stages, and Senior.
Why it matters Foods without an AAFCO statement are not nutritionally complete. Treats, toppers, and mixers often lack the statement — that's normal. But a primary diet should always carry one.

Food and nutrition products

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    Reviewed by Dr. Jennifer Nguyen, PharmD Licensed pharmacist · University of Illinois College of Veterinary Medicine · Last reviewed October 10, 2026

    What questions do farm families ask about pet nutrition?

    Farm and ranch families ask about AAFCO statements, grain-free diets, food transitions, portion sizes, prescription diets, and how long a bag lasts. Real questions, structured answers, reviewed by a licensed pharmacist.

    The AAFCO statement is a legal claim on the label that says the food meets minimum nutritional requirements for a specific life stage. Example: 'Formulated to meet the nutritional levels established by the AAFCO Dog Food Nutrient Profiles for All Life Stages.' If the statement is missing, the food is not nutritionally complete.

    No. Grain-free is not inherently better. The FDA has investigated a potential link between grain-free diets and canine dilated cardiomyopathy (DCM) in some breeds. Unless your pet has a confirmed grain allergy (rare), grain-inclusive food is the standard recommendation.

    Transition slowly over 7–10 days. Mix 25% new food with 75% old for 3 days, then 50/50 for 3 days, then 75/25 for 3 days, then 100% new. Fast transitions cause digestive upset.

    A 30-lb bag of dry dog food lasts approximately 3–5 weeks for a 40-lb dog. A 15-lb bag of cat food lasts approximately 4–6 weeks for a 10-lb cat. Use the Calorie & Portion Calculator above to get an exact estimate based on your pet and the bag size.

    Yes. We carry the full range of Hill's Prescription Diet, Royal Canin Veterinary Diet, and Purina Pro Plan Veterinary Diets. Prescription diets require a valid Rx — every order is verified by a licensed PharmD before it ships.

    Use body condition scoring (BCS) — a 9-point scale where 4–5 is ideal. You should be able to feel the ribs but not see them, see a visible waist tuck from above, and feel a slight abdominal tuck from the side. If you can't feel the ribs, your pet is overweight.

    Reviewed by Dr. Jennifer Nguyen, PharmD Licensed pharmacist · University of Illinois College of Veterinary Medicine · Last reviewed October 10, 2026

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