Portion Sizes by Breed: How Much Should Your Dog Really Eat?

One Size Does Not Fit All

A Chihuahua and a Great Dane could not be more different — and neither should their meals. Breed size dramatically influences caloric needs, metabolism, growth patterns, and even the risk of diet-related health issues.

This guide breaks down portion recommendations by breed category so you can feed your dog with precision and confidence.

Understanding Metabolic Differences

Smaller dogs have faster metabolisms relative to their body weight. A 5 kg dog needs roughly 40–50 calories per kilogram, while a 50 kg dog may need only 25–30 calories per kilogram. This inverse relationship means small dogs need more calorie-dense food per unit of body weight.

Additionally, stomach capacity varies enormously. A toy breed's stomach is roughly the size of a walnut; a giant breed's can hold over a litre. This affects meal frequency and portion volume.

Small Breeds (Under 10 kg)

Examples: Chihuahua, Pomeranian, Yorkshire Terrier, Miniature Dachshund, Shih Tzu

Daily Caloric Needs

• 3–5 kg: 200–350 kcal/day
• 5–10 kg: 350–550 kcal/day

Feeding Guidelines

• Meals per day: 2–3 (small breeds are prone to hypoglycemia if meals are spaced too far apart)
• Portion size: 50–150 g of fresh food per meal, or 30–80 g of kibble per meal
• Key concern: Obesity — even 0.5 kg of excess weight is significant on a small frame
• Tip: Use a kitchen scale; small breed portions are too small for accurate cup measurement

Common Mistakes with Small Breeds

• Overfeeding treats (a single dental chew can represent 20–30% of daily calories)
• Feeding adult food to puppies too early — small breed puppies need nutrient-dense puppy food until 9–12 months
• Free-feeding, which makes it impossible to monitor intake

Medium Breeds (10–25 kg)

Examples: Beagle, Border Collie, Cocker Spaniel, Australian Shepherd, Bulldog

Daily Caloric Needs

• 10–15 kg: 550–750 kcal/day
• 15–25 kg: 750–1,100 kcal/day

Feeding Guidelines

• Meals per day: 2
• Portion size: 150–350 g of fresh food per meal, or 80–180 g of kibble per meal
• Key concern: Activity variation — a working Border Collie may need 50% more calories than a sedentary Bulldog of the same weight
• Tip: Adjust portions based on body condition, not just breed charts

Common Mistakes with Medium Breeds

• Ignoring activity level differences within the same weight range
• Using the same portion year-round despite seasonal activity changes (especially relevant in Canada where winter reduces outdoor exercise)
• Failing to transition portions when neutering or spaying

Large Breeds (25–45 kg)

Examples: Labrador Retriever, Golden Retriever, German Shepherd, Boxer, Standard Poodle

Daily Caloric Needs

• 25–35 kg: 1,100–1,500 kcal/day
• 35–45 kg: 1,500–1,900 kcal/day

Feeding Guidelines

• Meals per day: 2
• Portion size: 350–600 g of fresh food per meal, or 180–300 g of kibble per meal
• Key concern: Joint health — excess weight accelerates joint degradation
• Tip: Labradors are genetically predisposed to overeating (a POMC gene mutation). Monitor portions carefully

Common Mistakes with Large Breeds

• Feeding too much during the growth phase, which can cause developmental orthopaedic diseases
• Not adjusting for the post-neutering metabolic slowdown
• Using elevated bowls without veterinary guidance (debated link to bloat)

Giant Breeds (Over 45 kg)

Examples: Great Dane, Saint Bernard, Newfoundland, Irish Wolfhound, Bernese Mountain Dog

Daily Caloric Needs

• 45–60 kg: 1,900–2,400 kcal/day
• 60+ kg: 2,400–3,200 kcal/day

Feeding Guidelines

• Meals per day: 2–3 (splitting into 3 meals reduces bloat risk)
• Portion size: 600–1,000 g of fresh food per meal, or 300–500 g of kibble per meal
• Key concern: Gastric dilatation-volvulus (bloat) — a life-threatening emergency
• Tip: Avoid vigorous exercise 30 minutes before and after meals

Common Mistakes with Giant Breeds

• Feeding one large meal per day (increases bloat risk significantly)
• Over-supplementing calcium during growth, which can cause skeletal issues
• Not accounting for their relatively lower caloric needs per kilogram

Quick Reference: Daily Portions

Breed Size	Fresh Food (per day)	Kibble (per day)	Meals
Small (under 10 kg)	100–300 g	60–160 g	2–3
Medium (10–25 kg)	300–700 g	160–360 g	2
Large (25–45 kg)	700–1,200 g	360–600 g	2
Giant (over 45 kg)	1,200–2,000 g	600–1,000 g	2–3

These are general ranges. Always adjust based on your individual dog's body condition, activity level, and health status.

How Alqo Simplifies Portioning

One advantage of using a portioned fresh-food service like Alqo is that meals arrive pre-portioned for your dog's specific weight and activity level. This removes guesswork and ensures consistent, accurate feeding every day.

Key Takeaways

• Breed size significantly affects caloric needs, metabolism, and feeding frequency
• Small breeds need calorie-dense food and precise portions — even small overages matter
• Medium breeds vary widely in activity; adjust portions accordingly
• Large breeds need careful weight management to protect joints
• Giant breeds benefit from multiple smaller meals to reduce bloat risk
• Use a kitchen scale for accuracy, and reassess portions regularly
• Body condition scoring is more reliable than breed charts alone

Feed for the dog in front of you — not just the breed on paper.