Shiloh’s age

We read Shiloh in our 4th grade book club. I think Shiloh is the best most heartwarming book ever. Shiloh was such a cute book and my goal is to read the whole series in order, as well as the movies.I would definitely recommend reading the books.I am curious, how old was Shiloh in the first book?

I based Shiloh’s age on the real dog I found in West Virginia.  The vet estimated its age to be about  two years old.