Can Dogs Eat Cheese? Safe Types, Lactose & Toxic Blue Cheese (2026)

27610 March 20264 min read
🔄Last Updated: 18 March 2026Originally published: 10 March 2026

⚠️ Quick Answer: YES — most plain cheese is safe in small amounts.
But blue cheese is toxic (Stilton, Roquefort, Gorgonzola). Many dogs are lactose intolerant. Watch for digestive upset.

Key Facts

Question Answer
Toxic? ⚠️ Blue cheese = YES (roquefortine C). Plain cheese = No
Safe amount Small cubes as treats only (<10% daily calories)
Lactose concern? Many dogs are lactose intolerant — start small
Worst types Blue cheese, garlic/onion-flavoured, high-fat brie
Emergency vet? If blue cheese eaten or signs of pancreatitis

Safe vs Unsafe Cheese for Dogs

Cheese Safe? Lactose Level Notes
Cottage cheese ✅ Best choice Low Low fat, high protein, easy to digest
Cheddar (aged) ✅ Good Very low Ageing removes most lactose
Mozzarella ✅ OK Low Fresh, plain only — not processed
Parmesan ✅ OK Very low Hard cheese, minimal lactose
Gouda / Edam ✅ OK Low Semi-hard, lower lactose
Goat’s cheese ⚠️ Moderate Lower than cow Still high in fat — small amounts
Brie / Camembert ⚠️ Caution Moderate Very high fat — pancreatitis risk
Stilton / Roquefort ❌ TOXIC N/A Contains roquefortine C — causes seizures
Feta ⚠️ Avoid High High salt and fat
Cheese with onion/garlic ❌ TOXIC N/A Onion and garlic are toxic to dogs

Why Blue Cheese Is Toxic

Blue cheeses (Stilton, Roquefort, Gorgonzola, Danish Blue) are made with Penicillium roqueforti mould, which produces a mycotoxin called roquefortine C. In dogs, this can cause:

  • Vomiting and diarrhoea
  • High temperature (fever)
  • Muscle tremors and twitching
  • Seizures (in severe cases)

If your dog eats blue cheese, contact your vet immediately.

Lactose Intolerance in Dogs

Many adult dogs produce less lactase (the enzyme that digests lactose) than puppies. Signs of lactose intolerance appear within 30 minutes to several hours:

  • Bloating and gas
  • Diarrhoea
  • Vomiting
  • Abdominal discomfort

Start with a tiny amount (fingertip-sized piece) and wait 24 hours. If no reaction, your dog likely tolerates cheese.

When to Avoid Cheese Completely

  • ❌ Dogs with pancreatitis (cheese fat triggers flare-ups)
  • Overweight dogs (cheese is calorie-dense)
  • ❌ Dogs on restricted diets or with kidney disease (high sodium)
  • ❌ Dogs with confirmed dairy allergies

Safe Uses for Cheese

  • Training treats — small cubes of cheddar as high-value rewards
  • Hiding medication — wrap pills in a small piece of cheese
  • Enrichment — smear cottage cheese in a Kong or lick mat

Frequently Asked Questions

Can dogs eat cheddar cheese?

Yes, in small amounts. Aged cheddar has very little lactose and is one of the safest cheese options for dogs. Keep portions small due to the fat content.

Is blue cheese dangerous for dogs?

Yes. Blue cheese contains roquefortine C, a toxin that can cause vomiting, tremors, and seizures. Contact your vet immediately if eaten.

How much cheese can I give my dog?

A few small cubes (1–2 cm) per day maximum. Cheese should never exceed 10% of daily calories. Smaller dogs need proportionally less.

Can puppies eat cheese?

Yes, small amounts of low-lactose cheese (cottage cheese, aged cheddar) are fine. Puppies actually produce more lactase than adult dogs, but still start small.

⚕️ Medical Disclaimer: This article is for informational purposes only. Consult your vet before introducing new foods, especially if your dog has health conditions.

More Food Safety Guides

EB

Emma Blackwood

RVN, DipHE CVN

Emma is a Registered Veterinary Nurse with a Diploma in Companion Animal Veterinary Nursing. She spent eight years at a veterinary hospital before specialising in pet nutrition. Emma reviews our food guides, diet advice, and "can pets eat" content.

📋 Veterinary Nutritionist 🎯 Pet Nutrition & Dietetics