Speaking of predators, they must be given feeding stations where they can hunt live cows, goats, sheep, or pigs. Regardless of whether a dinosaur is a leaf-muncher or a bone-cruncher, it will always need a source of fresh water to drink from. If there is not already a river running through your dinosaur's enclosure, you must create one. These enclosures must be large enought to sustain a proper ecosystem, and you must be very careful with which fences you choose.
Some dinosaurs are larger and stronger than others, and can bash straight through weak fences.
Meanwhile, a small or weak dinosaur contained by a fence that is too strong may be killed or seriously injured upon contact with it.