Catnip Jungle Balls Catnip Balls, 2 per pack. Straight out of the jungle and into your living room Catnip Jungle Balls will bring out the predator in your cat. Nuclear Strength catnip oil and a secret blend of natural fragrances is sure to drive any cat wild. The miniature 1.25" tennis balls are the perfect size for cats to pounce on. Covered with a bright jungle print pattern.