Final answer:
Without context on which Parker family or from which source the question is asking about, it is not possible to determine what animals were served at their Christmas dinner. Typically, a traditional Christmas dinner may include turkey, goose, ham, or beef.
Step-by-step explanation:
The question seems to be referencing a specific family's Christmas dinner, perhaps from a book or story. However, without the context of which Parker family is being referred to, or from which book, film, or other media, it is impossible to accurately determine what animals might have been served at their Christmas dinner.
If the student is referring to a particular piece of literature or media, then please provide that context for a more accurate and helpful response.
Generally, in literature or film, traditional Christmas dinners can feature a variety of meats, including turkey, goose, ham, or beef as the main dish.