In general, apples are harmless to dogs. However, there are a couple of things to be cautious about: the seeds and too many apples. Apple seeds contain amygdlin, a form of cyanide, which is very poisonous to every living thing. ... So, if you're going to give your dog apples, core the apples. read more
Toxicity: Toxic to Dogs, Toxic to Cats, Toxic to Horses Toxic Principles: Cyanogenic glycosides Clinical Signs: Stems, leaves, seeds contain cyanide, particularly toxic in the process of wilting: brick red mucous membranes, dilated pupils, difficulty breathing, panting, shock. read more