The relationship between cats and cardboard is something that every feline friend knows all about. However now there is actual video evidence that this is not just your average house cat phenomenon. Watch this great video of lions, bobcats, and other adorable big cats frolic with (appropriately sized) cardboard boxes, and live out the motto of "if I fits, I sits." If you want to learn more about these cats check out BigCatRescue.org.