We're building a pet enclosure in our backyard so that our tortoises and ducks can roam freely. One of our neighbors came up with the actual design and it includes a small wading pond and lots of ferns. We're planning on adding heat lamps to keep the critters warm when it's cold outside. I will post lots of photos of our mini-zoo once it's ready. I can't wait!
Update: Here's a short video of our ducks wobbling around in the backyard. Towards the end of the clip, you can see the ducks and the cats together and behind them is the new enclosure still under construction.