You can purchase a throwing knife in any sports equipment store, or hunting shop, or even from an online website. You are sure to find at least one brand and maybe more, so you will have to do some research before buying the perfect knife for you. You may not know it, but there is a lot of history that goes along with these types of knives. Before you go out and start looking, make sure that you understand what makes a good throwing knife. It should be durable, have an easy opening mechanism, and have a good blade that will work with the type of game you will be hunting. If you take all of these things into consideration, you should be able to find a great knife to start out with.
The first thing that you should consider is how strong the knife is. This is something that will affect how the knife will operate. Think about what you will be doing with it, and how you will be carrying it. If you plan on hunting and trapping, you do not want a knife that will break as easily, or one that will not hold up over time. You also do not want to buy a knife that will not hold up to the type of hunting you plan on doing. A hunting knife, for example, will probably need to be stronger than a fixed blade, if you plan on going hunting over a longer period of time.
Something else to think about is how easy is it to use the knife. You will probably be taking this throwing knife with you on most outings, whether hunting or just hanging out with friends. If you are not sure how to use it, or if it is not something that you will ever use on a regular basis, stick to a knife that will be easy for you to open. A pocket knife may be the perfect choice, as it will allow you to take the knife anywhere you go, without having to get a separate pocket for it. Remember to also keep the blade length in mind, and make sure that you get something that feels comfortable in your hands.