Nutrition is a cornerstone of Cairn Terrier health. An adult Cairn Terrier weighing 6–7kg typically requires 400–500 kcal of high-quality food per day, split across two meals to support consistent energy levels and healthy digestion. Small breeds can experience hypoglycaemia if meals are skipped; regular feeding times are especially important for Cairn Terrier puppies. 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 small-breed dog. Adjust based on your dog's individual weight, age, and activity level. Always consult your vet.
Foods to Never Feed Your Cairn Terrier
The following foods are toxic to dogs. Some are fatal even in small quantities. Keep them completely out of reach of your Cairn Terrier.
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 Cairn Terrier has ingested a toxic substance, contact your vet or the Animal Poison Line immediately: 01202 509 000.
Recommended Foods for Cairn Terriers
Dog Food
Best Complete Dry Food for Cairn Terriers
A complete, nutritionally balanced dry food formulated for small terrier breeds. Protein-first recipe with no artificial additives. Suitable for adult Cairn Terriers.
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Dog Food
Grain-Free Option for Cairn Terriers
A grain-free formula ideal for Cairn Terriers with sensitivities. High in animal protein with sweet potato as the primary carbohydrate source. Includes omega-3 for coat health.
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Dog Food
Cairn Terrier Puppy Food
Formulated specifically for Cairn Terrier puppies, with the correct calcium-to-phosphorus ratio for small-breed bone development. Supports healthy growth from 8 weeks.