Although ecologists believe that vertebrate herbivores must select a diet that allows them to meet their nutritional requirements. while avoiding intoxication by plant secondary metabolites. this is remarkably difficult to show. A long series of field and laboratory experiments means that we have a good understanding of the factors that affect feeding by leaf-eating marsupials. https://www.roneverhart.com/Castello-di-Amorosa-Il-Barone-Napa-Valley-Cabernet-Sauvignon-2007/