Treat counter-surfed buns as an emergency, not a snack theft
Currants are dried grapes in all but name, and grapes, raisins, sultanas and currants share the same serious risk for dogs: in some individuals they trigger kidney injury that can become life-threatening. There is no reliable safe amount to calculate at home, because sensitivity varies unpredictably from dog to dog. A quantity that leaves one dog unharmed can make another very ill, and size alone does not protect a large dog.
Baking does not rescue the situation. The currants scattered through a hot cross bun remain currants after time in the oven, and the bun adds extra problems of its own, including sugars, spices such as nutmeg in some recipes, and a rich dough that can upset the stomach. Count this counter raid by the buns: work out how many are missing, estimate the currants across them as honestly as you can, and make the call.
The call comes before any symptoms
Phone your vet immediately, or an emergency veterinary service if the surgery is closed. Do not wait for vomiting or quietness to confirm the problem, because kidney injury develops silently at first and early treatment gives the best chance of a good outcome. Tell the team your dog's weight, how many buns were eaten, when it happened, and whether wrappers, string or other foods went down too.
Follow their instructions exactly. They may tell you to come straight in, and they may give specific first steps to take on the way. Do not induce vomiting at home unless a vet tells you to and explains how, and do not offer home remedies, extra food or large volumes of water as a substitute for that call. Bring the bun packaging or a remaining bun with you if asked, since the ingredient list helps the team judge what else was eaten.
What to watch for while you wait and afterwards
Early signs in the first hours can include vomiting, loose stools, drooling, tummy discomfort and unusual tiredness after the initial excitement of the theft. A dog who seems bright is not in the clear: the kidney-related signs tend to arrive later, often over the following day or two, and include drinking and urinating much more than usual, then sometimes far less, loss of appetite, weakness and a dog who steadily flattens and withdraws.
If you are monitoring at home only because a vet has advised it, keep a simple written note of water intake, urinations, vomits and appetite with times. That timeline is clinically useful if the picture changes, and it stops a worried household from relying on memory at midnight. Any worsening, or any drop in urination, means contact the vet again immediately rather than waiting for a scheduled update.
Why the counter became the danger zone
Hot cross buns cool, store and toast at exactly dog height in many kitchens: on counters a large dog can surf, in bags a determined dog can shred, and on low coffee tables during tea. The fix is storage, not scolding after the fact.
The same rule covers fruit cake, mince pies, flapjacks and trail mixes. If it contains dried vine fruit, it lives behind a closed door.
Keeping emergency information within reach
In a currant scare, the minutes spent searching for a vet number or guessing a weight are minutes taken from treatment. Keeping your dog's current weight, vet and emergency contacts and health notes assembled in KinsLe Pet Passport means the person who finds the empty bun bag can make a complete, useful call at once, whoever they are.