Bullmastiff Diet & Feeding Guide

Back to Bullmastiff Overview

Nutrition is a cornerstone of Bullmastiff health. An adult Bullmastiff weighing 41–59kg typically requires 1900–2300 kcal of high-quality food per day, split across three smaller meals to support consistent energy levels and healthy digestion. 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.

Diet Recommendations for Bullmastiffs

Diet Type	Daily Portion	Frequency	Suitability
Senior Formula	Varies by weight	—	Recommended
Wet Food (Canned)	Varies by weight	—	Recommended
Dry Kibble	Varies by weight	—	Recommended
Breed-Specific	Varies by weight	—	Recommended

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.

Foods to Never Feed Your Bullmastiff

The following foods are toxic to dogs. Some are fatal even in small quantities. Keep them completely out of reach of your Bullmastiff.

Grapes & Raisins Fatal

Can cause acute kidney failure

Xylitol (sweetener) Fatal

Causes hypoglycaemia and liver failure

Chocolate Fatal

Theobromine poisoning; can be fatal

Onions & Garlic Dangerous

Damages red blood cells, causes anaemia

Macadamia Nuts Dangerous

Weakness, vomiting, tremors, hyperthermia

Cooked Bones Dangerous

Splintering; risk of internal puncture

Alcohol Fatal

Respiratory depression; can be fatal

Avocado Harmful

Persin toxicity; vomiting, diarrhoea

If you suspect your Bullmastiff has ingested a toxic substance, contact your vet or the Animal Poison Line immediately: 01202 509 000.

Recommended Foods for Bullmastiffs

Dog Food

Best Complete Dry Food for Bullmastiffs

A complete, nutritionally balanced dry food formulated for giant working breeds. Protein-first recipe with no artificial additives. Suitable for adult Bullmastiffs.

Check Price on Amazon

As an Amazon Associate we earn from qualifying purchases.

Dog Food

Grain-Free Option for Bullmastiffs

A grain-free formula ideal for Bullmastiffs with sensitivities. High in animal protein with sweet potato as the primary carbohydrate source. Includes omega-3 for coat health.

Check Price on Amazon

As an Amazon Associate we earn from qualifying purchases.

Dog Food

Bullmastiff Puppy Food

Formulated specifically for Bullmastiff puppies, with the correct calcium-to-phosphorus ratio for giant-breed bone development. Supports healthy growth from 8 weeks.

Check Price on Amazon

As an Amazon Associate we earn from qualifying purchases.