Jagrex

Among the diverse cast of predators found in Lemuria, few match the versatility of the Jagrex. Common throughout Central Lemuria's wetlands, rivers and jungles, the Jagrex is a textbook example of an apex predator, as comfortable in the water as it is on land, not many animals are off the menu for this powerful predator. Able to hold its breath for up to twenty minutes at a time, Jagrex wait in ambush in deep water, crocodilians, hippos, large fish, and large land animals coming to the water to drink are grabbed in massive bone crushing jaws, notably stronger than many Mordaxtyrannids. This is to ensure the prey is incapacitated or crippled as quickly as possible lest the ambush will fail. When possible, the Jagrex will prefer to drag the struggling prey into the water. Although fully capable of swimming, the Jagrex prefers to sink to the bottom and punt similar to how hippos do.

This strange aquatic lifestyle most likely occurred due to extreme niche partitioning with the many Dracosaurs and other dragonimorphs found in its range, all of which usually stay away from water. However the Jagrex is not dependent on water, fully capable to hunt like other tyrannosaurs on land. Jagrex mate for life, forming nuclear families, however each breeding season, the male must reaffirm his fitness to his mate or else she will leave. This is usually simply achieved through presenting her with a decent sized meal at the start of the season.

Unlike other Mordaxtyrannids, Jagrex chicks do not leave the family until their eighth or ninth year, meaning there is higher diversity of mesopredators in their range. This heightened parental care is most likely again a result of the higher density of dragonimorphs they compete with.