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It is a shame that the ASA have totally disregarded the evidence from the Veterinary Poisons Unit at Guys which clearly shows that in one example an Elkhound died after injesting 4.7gms that is probably no more than a couple of grapes killing a 25kg dog!
The ASA asked the vet (a retired political vet) that advised the company for goodness sake and seemingly ignored the hundreds of practising clinical vets who deal with these poisoning cases every week!
Please note the doses per kilogram in this paper from the poisons unit: Raisin/sultanas: In a review of 24 cases of renal failure in dogs after ingestion raisins or sultanas where the dose could be estimated it varied from 2.8 to 36.4 g/kg. All these animals had renal failure and there was no significant difference in dose ingested between dogs that died and those that survived (Eubig et al., 2005). A Norwegian Elkhound was euthanased after ingestion of 4.7 g of raisins/kg Mazzaferro et al., 2004).
· Grapes: A 8.2 kg dachshund developed renal failure after only 4-5 grapes; he survived with supportive care and hospitalisation for 12 days (Mazzaferro et al., 2004). Renal failure developed in another dogs after 10 to 12 grapes. In a review of 4 dogs, the quantity of grapes ingested varied from 448 to 1,344 g, which is equivalent to 19.6, 30.8, 50.4 and 148.4 g/kg (Eubig et al., 2005).

Grapes raisins etc can be lethal to dogs in very small quantities, please do your research Grocer Magazine