As any other animals cats like to be entertained, they actively react to catnip, real feather or rattle toys. Catnip is a natural non-addicting herb that encourages playful behavior for about 70% of cats. All Catch & Scratch toys are designed to satisfy your cats hunting instincts and to keep it's on paws. Catnip is a herb that is a member of the mint family. It can grow to be up to three feet high.