Somehow this didn't occur to me until just now, but living things can't physically go to the Far Shore, right? I'm only familiar with the anime so I'm not sure if the manga suggests anything different, but I don't remember Hiyori ever setting foot on any Far Shore-ish locations without going out of body first.

So... if this is correct, would that mean trying to take a living animal from the Near Shore to the Far Shore would leave behind the physical body? Do a bunch of characters have ghost cats??