Suppose you want to bring home a new cat and are looking for a way to really make it feel at home. Actually, all you need to do is buy some nice cat furniture and have it in place by the time you bring it into your home. The first thing that you should prepare is a cat house. Two to three feet off the ground is the best height. If you don't have enough room for a cat house, a cat bed is also a nice choice. Once you have a nice spot where your cat can go to feel safe, then it's time to get cat furniture that offers your pet a nice place to play. One nice choice is cat trees. Scratching posts   are another great idea if you are short in space, but still want to give your cat a nice place where it can claw   at instead of your own furniture. If you're looking for a great way to shop for cat furniture, simply turn on your computer and do some online shopping. In no time will you be able to skim all the offerings from many online stores. What's great is that you can easily compare products and their prices, so you can get what you want at the best possible price. And, probably the nicest thing about online shopping is that your purchases may be shipped right to you, so you don't have to waste time making a trip to the store. So, if you have brought a new cat into your home, make sure that home is an inviting one by buying some new cat furniture. Without it, your cat might feel lost and unsafe, which you definitely do not want to happen. According to the author, the first concern for a cat house is   _  .
its height its size its price safety