Plain angel food cake is not toxic to dogs, and a crumb or two will not hurt. It is also nothing but sugar and refined flour, and the toppings that usually come with it are where the real problems are.
The short answer
There is no reason to give a dog cake. It is not poisonous, so a stolen mouthful is not an emergency, but it contributes nothing and it is easy to overdo.
Sugar and fat
Angel food cake is lighter than most cakes — it is made with whipped egg whites and little or no butter — but it is still largely sugar and flour. For a 5kg dog, whose whole day is roughly 300 calories, a slice is a substantial share of it and provides nothing nutritionally.
Repeated, that is a straightforward route to weight gain and dental problems. A sudden fatty or sugary load can also cause vomiting and diarrhoea, and in richer cakes, pancreatitis.
Check for xylitol and chocolate
Xylitol (sometimes labelled birch sugar or E967) is dangerous to dogs in small amounts — a rapid crash in blood sugar and, at higher doses, liver damage, with symptoms possible within 30 minutes. It turns up in “no added sugar” and “reduced sugar” products far more often than in ordinary ones. Check the ingredients every time, including on a jar you have bought before.
Chocolate is the other one — in chocolate cake, chocolate icing or shavings. Toxic to dogs, and darker is worse. Phone your vet with the type and quantity if your dog has had any.
What about the icing and toppings
- Chocolate anything — toxic.
- Raisins, sultanas and currants — genuinely dangerous to dogs, and common in cakes. Even small amounts can affect the kidneys. Phone your vet.
- Macadamia nuts — toxic to dogs.
- Cream and buttercream — fat, and a lot of it.
- Sugar-free icing — the most likely place to find xylitol.
My dog ate cake — what now?
- A small piece of plain cake, dog otherwise well: nothing to do. Loose stools are possible.
- A whole slice, or a small dog: ring your vet for advice.
- Chocolate, raisins, macadamias, or anything listing xylitol: phone your vet now, with the packaging.
- Vomiting that keeps going, a hunched back, weakness or seizures: phone immediately.
This is general information, not veterinary advice, and it cannot account for your dog’s size, age or health. If your dog has eaten something you are unsure about, phone your vet rather than searching for reassurance.
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