On a 2004 4Runner with gray interior.
I will try to post pictures of what my dog has destroyed.
It is the part of the door just under the window. Interior.
Can I get just this part?
Or, do I need to buy doors at a junkyard?
Ways to repair?

 

Wow! Bad Dog!

I would try the dealer, 1sttoyotaparts.com usually has good deals.

If that's too expensive, try a toyota salvage yard. There's a big one in Sacramento, the name escapes me...