This pairs a soft resting spot with a little garden. As your cat works their way over to the cat-safe greenery, they are tapping the same foraging instinct their wild cousins run on, hunting out a plant to graze. Then they get to flop into the hammock and enjoy the spoils. Plants are not included, which leaves the menu up to you.There is plenty to choose from on the cat-safe side, spider plant, lemon button fern, catnip, cat grass, variegated wax plant, lilyturf, or boston fern among them. The hammock is made to fit studs at either 16 or 24 inch spacing.