Nutrition is a cornerstone of Leonberger health. An adult Leonberger weighing 41–77kg typically requires 2450–2950 kcal of high-quality food per day, split across three smaller meals to support consistent energy levels and healthy digestion. Their high energy output means Leonbergers need a calorie-dense diet — look for a working- or active-dog formula with at least 25% protein content. Feeding from an elevated bowl and avoiding vigorous exercise directly after meals can help reduce the risk of gastric dilatation-volvulus (bloat), which giant breeds are predisposed to. Always adjust portions based on your dog's individual weight, life stage, and activity level, and consult your vet before making significant dietary changes.
Portion sizes are approximate guidelines for a giant-breed dog. Adjust based on your dog's individual weight, age, and activity level. Always consult your vet.
The following foods are toxic to dogs. Some are fatal even in small quantities. Keep them completely out of reach of your Leonberger.
Can cause acute kidney failure
Causes hypoglycaemia and liver failure
Theobromine poisoning; can be fatal
Damages red blood cells, causes anaemia
Weakness, vomiting, tremors, hyperthermia
Splintering; risk of internal puncture
Respiratory depression; can be fatal
Persin toxicity; vomiting, diarrhoea
If you suspect your Leonberger has ingested a toxic substance, contact your vet or the Animal Poison Line immediately: 01202 509 000.
A complete, nutritionally balanced dry food formulated for giant working breeds. Protein-first recipe with no artificial additives. Suitable for adult Leonbergers.
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A grain-free formula ideal for Leonbergers with sensitivities. High in animal protein with sweet potato as the primary carbohydrate source. Includes omega-3 for coat health.
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Formulated specifically for Leonberger puppies, with the correct calcium-to-phosphorus ratio for giant-breed bone development. Supports healthy growth from 8 weeks.
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