BLOOD test results from poisoned dogs may give police more leads in their investigation into the string of attacks on animals in Bowen Road. Senior Inspector Kelvin Ho Ka-fei of the Happy Valley division said yesterday he expected the results from animals poisoned over the past two months within one or two weeks. 'If we can identify the exact chemical, we can possibly identify the source and exact ingredients,' he said. Blood tests on four other dogs killed in the past two years showed carbofuran, an agricultural chemical, to be the poison. The dogs vomit, suffer convulsions and die unless quickly treated. In February, Whisky, one of former Governor Chris Patten's dogs, was rushed to a vet after coming into contact with the poisoned food. Amy Chow Tak-sum of the Society for the Prevention of Cruelty to Animals advises anyone whose animal comes into contact with poisoned food to 'contact a vet immediately and bring the food itself as that may help identify the poison'. She pointed out that leaving the poisoned food on the street was 'not only dangerous to dogs but it is also dangerous to children.'