In some animals (like dogs) size seems like it's controlled mostly by just a few genes (IGF1, and the genes that repress it). I'm curious:
(1) Does other miniaturization takes a similar route (for example, with pygmy hippos).
(2) Do we have the technology / knowledge to deliberately create "pygmy" animals?
(3) Is it possible that miniaturization could be a way to protect endangered large species? For example, we shrink them down so they need less room but they could still breed and preserve biodiversity. Also, later on there's always the possibility that we could gradually un-shrink the species if we get our act together and free up more habitat.
Note: I realize that they wouldn't be able to fill the same ecological niche at half the size.