Chocolate contains a substance called ‘theobromine’ which is toxic to dogs and cats. It’s similar to caffeine and can cause problems with the nervous system, bowels, kidneys and heart.
Just like people, it is possible for a dog to have an allergic reaction to something such as a bee sting, a medication, or a vaccine.
Infectious hepatitis is a serious disease also known as ‘canine adenovirus’ or ‘Rubarth’s Disease’. It affects the liver and other major organs causing a range of symptoms. Your dog can catch infectious hepatitis from contact with an infected dog, or somewhere an infected dog has been.