You do have a good point here, the first thing I thought when I saw this vn was exactly the same thing you are writing here
Sooooo, I found out that, if you want a furry to look old, u can give him a moustache in the snout, somehow, that makes it look old, and, you can take it further if you paint the snout (and if you want, the jaw too) white/grey
Now, does David share these points?
Yep, he does
Here's a little example of the point I'm trying to make here :D

Also, his coat looks like something a grandpa would use trying to look cool with the young xD
Heck, I think it would be really funny if in the vn David had this problem when he meets new people
