http://www.poochtips.com Dog skin problems can occur for a variety of reasons. Some owners have the false belief that a dog won't eat or drink something that isn't good for them when they are outdoors roaming off-leash. But unfortunately, this is a myth. Dogs make the choice of what to eat on what tastes good to them. They have no concept if a substance is harmful or poisonous. However, dogs can expel rotten or toxic substances more quickly from their digestive systems than we can since their vomiting reflex is quicker than ours. The less time a substance stays in the system, the less chance it has to create ill effects.