Complete Dog Food Guide

Everything you need to know about feeding your dog for optimal health, from choosing the best dog food to understanding nutritional requirements at every life stage.

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Comprehensive Guide
DSM

Dr. Sarah Mitchell

Certified Professional Dog Trainer (CPDT-KA)Applied Animal Behaviorist15+ Years Experience

Dr. Sarah Mitchell combines her expertise in dog training and behavior with extensive knowledge of canine nutrition. She understands the critical connection between diet and behavior, and has helped thousands of dogs achieve optimal health through proper nutrition.

Last updated: January 12, 2026

Frequently Asked Questions

How much should I feed my dog?

Feeding amounts depend on your dog's weight, age, activity level, and the specific food's caloric density. Start with the feeding guidelines on your dog food package, then adjust based on your dog's body condition. You should be able to feel (but not see) your dog's ribs, see a visible waist from above, and observe an abdominal tuck from the side. Weigh your dog monthly and adjust portions accordingly - most dogs need less food than package guidelines suggest.

Is grain-free dog food better for my dog?

For most dogs, grain-free food offers no health advantage. Grains like rice, oats, and barley are easily digested by dogs and provide valuable nutrients. The FDA has investigated a potential link between grain-free diets and dilated cardiomyopathy (DCM) in dogs, though research is ongoing. Unless your dog has a diagnosed grain allergy (rare - most allergies are to proteins), there's no reason to avoid grains. Consult your veterinarian before switching to grain-free.

Can I feed my dog a homemade diet?

Yes, but it requires careful planning. Homemade diets often lack essential nutrients without proper supplementation. Studies show that most homemade dog food recipes found online are nutritionally incomplete. If you want to feed homemade, work with a board-certified veterinary nutritionist to formulate balanced recipes. You'll likely need supplements for calcium, fatty acids, and micronutrients. Never feed an unbalanced diet long-term.

How do I know if my dog has a food allergy?

Food allergies in dogs typically cause skin symptoms (itching, especially around ears, paws, and rear), recurring ear infections, and sometimes gastrointestinal issues. The only reliable way to diagnose food allergies is through an elimination diet trial lasting 8-12 weeks under veterinary supervision. Blood and saliva tests for food allergies are unreliable. Common allergens include beef, dairy, chicken, and wheat - not grains in general.

Should I leave food out all day or feed scheduled meals?

Scheduled meals are recommended for most dogs. Scheduled feeding helps maintain healthy weight by controlling portions, makes monitoring appetite easier (loss of appetite is often an early illness sign), supports house training in puppies, and prevents resource guarding in multi-dog homes. Most adult dogs thrive on two meals per day, 8-12 hours apart. Free-feeding (leaving food out) can lead to obesity and makes it harder to notice appetite changes.

Are expensive dog foods worth the price?

Price doesn't always correlate with quality, but premium foods often have better ingredients, more animal protein, and fewer fillers. The key is reading ingredient lists - look for named meat proteins as the first ingredients rather than vague 'meat meal' or excessive corn/wheat. Consider cost per calorie rather than cost per pound, as calorie-dense foods require smaller portions. A healthy dog on quality food often has lower vet bills long-term.