Yes, you can definitely give your catnip, but be warned that your cat could go crazy. Catnip is an all-natural herb related to the mint family of herbs. It is perfectly normal to give cats catnip, but how much you give your cat should be discussed with your vet. Some cats can get a ‘high’ off just a little bit of catnip. For instance, some cat toys contain small doses as catnip as do some cat treats. Your cat may play with these catnips laced toys and eat a few treats at a time without any real change in behavior. He may be calmer or happier. Other cats, however, may get extremely hyper and almost ‘crazy’ like with just a whiff of the toy or one treat. Consult with your pet clinic Frisco, TX about giving your cat catnip and how much to give your cat.