Ye guys are talkin' 'bout the same kind of thing, just different uses. Does Flywheel include the converted posed mesh with the screenshot, or just the picture itself when selling their work? Ye could always ask them f'er the object after completed, but she may only do pictures.
I believe what Zoph wishes to do is use the canine and feline mesh as an object in her maps, which is totally doable. All ye need is the files f'er the mesh and skeleton that holds the frame up. Sadly, I 'ave no clue where to find these items. They may be the same things ye use to make different animation mods, or they could be something else.
But, yes, to answer y'er first question, ye can. I'm also quite sure that ye could make the objects downloadable f'er public use. All ye need is the correct files and, of course, Blender.