Check the live vein, from where it emerges from the soil all the way up.
It’s “possible” that is a Tanuki, but very unlikely.
What you are looking for are any gaps between the deadwood and live vein.
A skillful Tanuki would have had a groove carved into the deadwood, and a long whip of live material inserted into that groove. As stated above, often the whip would have been nailed or screwed into place to hold it. Then, it takes years for the whip to expand and fill up the space in the groove, and then start to bulge out to make it look natural. It’s very difficult to make a Tanuki and have it completely fill the groove evenly. Regardless, it would take a decade for the whip to fill the groove, and create the canopy of foliage your tree has.
Now, given all that... anyone who has the skills to do that would more likely use Shimpaku as the foliage. It just makes prettier foliage.
Therefore, if you “can’t really tell”, then it’s most likely NOT a Tanuki.