Hi!
Dwarf Fortress has a few hundred real world animals and some dozens of fantasy creatures, but the most distinct part of the bestiary is the critters that are generated by the program. These include forgotten beasts, various demons, night trolls, werecreatures, experiments, and others. It's a pixel art challenge to accurately reflect what is stated in the text, and our first step is the night trolls! The body positions are a bit restricted due to inventory and piece-matching requirements.
In other critter news, we also have visual distinctions between domestic animals like the peacock and peahen.
Here are some updated stockpile pictures, where signs distinguish the sort of stockpile (clockwise from top left: food, furniture, finished goods, lumber). Since it is an initial DF embark, the finished goods pile is mostly crutches and splints, for the inevitable. You also have a look here at the base level of DF's multi-tile trees. We're using the foliage shadow to clarify that this is the base of a tree and not just a trunk.
Finally, here is a windmill turning some axles and gear assemblies.
You can use such machines to pump water, mill grains, and turn rollers to propel minecarts. Power can be provided by windmills and water wheels, and vertical axles and gears allow you to transmit it downward into the mountain as well.
- Tarn