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My 7-year-old 10 kg Labrador has been eating a slice of cheese every day for six weeks — is this going to cause long-term damage?

Dogs · Food safety

Last reviewed: 2026-09-05 · Reference ranges: ASPCA, Pet Poison Helpline & Merck Veterinary Manual

Short answer

It could, and the risk increases with age. Cheese is high in fat and most dogs are somewhat lactose-intolerant, so daily exposure adds up. Long-term, this pattern can lead to pancreatitis, weight gain, and chronic gastrointestinal upset. Watch for ongoing loose stools, vomiting, excessive gas, or unexplained weight changes. Reduce cheese to an occasional treat or switch to a low-fat, lactose-free option, and book a check-up with your vet to assess her pancreas and overall health.

Cheese — Food safety facts

Feed with care · Dogs · full breakdown on the linked food page

Most pets are lactose-intolerant to some degree. Tiny pieces are fine as treats; avoid if your pet gets diarrhoea.

Dogs and cats carry the same rating (Feed with care), so the notes below hold for either pet.

Cheese is not poisonous to dogs, but it is easy to over-feed. Rich fat, salt or seasoning can bring on vomiting or diarrhoea within a day, and repeated large portions are a recognised trigger for pancreatitis.

If it ate some before you noticed, watch for vomiting, diarrhoea, loss of appetite, unusual tiredness or a painful, swollen abdomen over the next 24 hours. A one-off small amount in a healthy adult usually passes with water and rest; repeated exposure, a puppy or kitten, a senior, or a pet with an ongoing illness is a reason to call your vet the same day.

Why these cautions matter

Added sugar brings empty calories, and over months that means weight gain and dental disease — both far harder to undo than to avoid.

Most adult pets make very little lactase, so dairy tends to produce gas, bloating and diarrhoea instead of usable nutrition.

Cheese can turn up now and then, but not as a daily habit: keep the rest of the day's food unchanged and watch the next walk and the stool that comes with it.

The full verdict, portion guidance and serving notes are collected on the Cheese food facts page.

Open the full food page: Cheese food facts →