User blog comment:Elephant777/Long live the Queen, but how does she live? (Rexy)/@comment-17754282-20150306185039/@comment-17754282-20150316175603

As Collector1 said - the carnivores eat the herbivores and the herbivores eat lysine-rich foods.

The first movie did leave such a notion hanging, but the second one clearly answered it.

Also, not all of the carnivores would have had to rely solely on eating the herbivorous Dinosuars in order to get lysine - many fish species, including catfish, mackrel, pike, burbot and salmon, can provide relatively high levels of lysine. Any animal capable of catching fish would likely have thrived - Baryonyx, Spinosaurus, and Suchomimus in particular are known to have fed on fish and it is likely that smaller carnivores like Herrerasaurus, Dilophosaurus, Ceratosaurus, Proceratosaurus and even Velociraptor would not have turned their noses up at a potential meal like that.

Also Beef and chicken are good sources of lysine. We know that cows were on the island (from our introduction to the raptors) and its likely that chickens were too. It is entirely possible that these animals, like the dinosaurs, escaped into the wild and provided a food source - we cannot know how long those animals would have lasted, necessarily, but we do know from information regarding Jurassic World that there is a species of deer (Nublar Tufted Deer) living on the island - it is a native to the island and obviously survived the dinosaur's temporary dominance, so it is not unfeesible that Cows, Chickens and Goats could have too. (I don't know if goat meat or venison serves as a good source of lysine but odds are there is some there - further sources of this amino acid)