In as much detail as you can give me, please break this topic down for me.

First of all, this topic is easily Googled with a wealth of information to be found on the Internet. There's nothing to "break down." Think about what beavers or social weaver birds or termites or prairie dogs do all day.

One example of animal architecture was "first discovered by someone messing around on Google Earth, [and] is the largest piece of animal [architecture] on the planet, and according to some science people, it would have taken upwards of 20 years to build, and can be seen in satellite images from 1990."

Now, aren't you wonderfully curious?