By Walter Wood, Jr. I was amazed at the status that dogs seem to enjoy in Europe. First, there were lots of them in the parks, on the streets, in the homes, on the subways, and, of course, all with masters in tow. Many were well-dressed in the latest fashions in collars as well as outerwear. Most had high-tech leashes, that stretched beyond normal leash limits to allow the dogs greater freedom of movement. I was impressed with the dog food sections in the stores-much larger proportion