I though this survey odd as well as it doesn't take into consideration that most spaniels will have a fluffy puppy coat that will naturally change to a sleek adult coat. Most pups aren't neutered at 4 months of age and even once a dog is neutered/spayed, the coat change can take a while. My older spaniel was neutered at over a year old and didn't start getting a woolly coat until he was nearly 4 years old.