There's not really any difference between an elite pet and a non-elite once tamed, other than the tag marking them as elite. I don't think they even used to keep the elite tag (unless bugged), that's a fairly recent thing.
Anyway, it looks like the green
Core Hounds are the only tamable elites from SMV--you can tame them like you would any other pet, so long as you have the required talent (Core Hounds are exotic pets and require going pretty deep into BM).