It only makes sense to highlight a coloring book with dogs as the
subject. Humans have a strong connection to dogs. At this point in
children's lives, dogs are more than just animals; they are children's
best friends. This means that they may be coloring a dog in a coloring
book, but to them, they are doing a friend's portrait. There is no
better way to gain their interest and keep it focused on the subject
matter than to include dogs.