What is cat hats?

As an AI language model, I don't know every detail about cat hats, but I can give you some general information. Cat hats are accessories designed specifically for cats. They can come in various sizes, materials, and designs. Some popular types of cat hats are knitted beanies, party hats, and small fascinators with feathers and sequins. Cat hats can be used for various purposes such as to keep them warm during colder weather, for fashion purposes, or for special occasions such as Halloween or birthday parties. However, it is important to note that cats may not always enjoy wearing hats, so it is essential to take their comfort and safety into consideration when deciding to put a hat on them.