Cattle (and sheep, of which there are at least 130.000 stuck at the moment, see https://www.voanews.com/middle-east/stranded-suez-canal-ship...) aren't squeezed in containers but rather shipped on specialized ships (which in turn often are sometimes barely retrofitted other ships, such as car ferries, see https://www.sueddeutsche.de/panorama/spanien-rinder-irrfahrt...).