Catnip-filled toys are popular playthings for cats, designed to stimulate their natural instincts. These toys are typically stuffed with dried catnip, a herb from the mint family that many cats find irresistible. When cats interact with these toys, they may roll, pounce, or rub against them, showcasing playful behavior. The effects of catnip can vary among cats; about 50-75% of felines are sensitive to it. The reaction usually lasts for about 10 to 15 minutes, after which the cat may lose interest. Catnip-filled toys can provide mental stimulation and encourage exercise, contributing to a cat's overall well-being.