Cats love stairs, and they never seem to get enough of climbing up and down them with ease. However, for humans stairs, that are not climbed with caution, can cause some serious injury and in some cases death. Sure, all stairs need to be climbed in order to get to the top or bottom, depending on where you want to go, it is equally true that there are various types and shapes of stairs, and some need to be climbed more cautiously for safety purposes.