Jen.... Luckily we have had a pretty mild winter here in TN so far!
We did get down below freezing the past couple of night, and just the top layer freezes. The fish hibernate at the bottom of the pond during that time. However, whenever they can get to the surface, these fishies are always ready to eat! It's funny, the pet store told me that they wouldn't eat all winter!!! WRONG!

Bryan.... the kitties surprisingly enough just watch, only rarely do they bat... but you know that comes with a price ... a WET PAW!
Of course, we have had more than few incidences of CAT OVERBOARD!!! Yep, they'll get to playing chase in the narrow yard and OOPS, "there's a POND there!".... hehe