Identify the Juvenile Form

In this analogy, we are looking for a relationship similar to that of the first pair of words. Consider the pair of words dog and puppy. A dog is a mature version of a puppy. They belong to the same category, as a dog is an adult canine and a puppy is the juvenile form. Now look at the following options and choose the word pair that represents a similar classification relationship, where the first word is the adult and the second word is its juvenile form.