I just stumbled on Kikkerland's "Anatomic 3-D Puzzles" in a shop and was absolutely enthralled. These are snap-together models (calling them "puzzles" is a little weird, actually) showing the anatomy of various critters, from humans to cows, mammoths, and my favorites, beetles and snails. They're made out of plastic that feels just like the plastic they use for the anatomical models you had in senior biology class, with the same color schemes, but the sculpting is absolutely gorgeous, making them into stylish knick-knacks as well as interesting scientific instructional materials.
Kikkerland's online shop carries the whole line, albeit at about 10 percent higher prices than other webstores that carry one or two. My advice is to check out the items here, find the ones you want and google for a cheaper one at another store.