I purchased this for our two elderly cats so they can spend time outside and they are quite happy.  It was fairly easy to put together but we had to purchase a large bag of zip ties because one of our cats was able to push through the gaps in the fencing.  I also purchased a larger tarp to put on it to keep them out of the rain in case we aren't home to bring them in (we also built a two-story cat house which is inside that they like to use).  Once they go to cat heaven, I will pass this on to my daughter who has chickens because it is easy to move and would offer them more ground to peck and explore.