The proto-megalaukjaw has replaced its ancestor the great ukjaw and has furthered its development in becoming an advanced land predator. They have developed many adaptations such as having multiple spikes on their mandibles which move together because they are attached together with flexible tissue. They have now developed extra two simple digits on each foo to help them balance while running. One of their most advanced features is that they have started to develop a proboscis tongue coming out of their proboscis bony structure this tongue has a simple sense of taste. Along with that, they have developed a muscle system around their proboscis to like a lower jaw. Their lungs have continued to develop and now have a moderate sense of smell. They also evolved many more spikes to protect themselves while hunting. Their top claw on their tail grasper has developed and become larger to be used when prey tries to escape behind them.
The proto-megalaukjaw being in such a prey rich environment does not have to spend all its time hunting for food. If they are not out roaming the plains for food they are resting under the trees saving their enery for when they are hunting. Since they have more teeth, it is easier to cut through flesh. Also, since they have evolved their proboscis tongue, they can swallow larger chunks of meat. They no longer have to rely on digesting the meat outside their bodies. They will sometimes use their tail grasper to grasp their prey.
During the spring, male proto-megalaukjaws will brawl with each other to have a right to mate with a female. After mating the parent will build a dirt next surrounded by protective plants. At birth, the offspring look like premature versions of their parents. Both the mother and the father will hunt food for their offspring and teach they how to hunt themselves. They mature at the age of five.
They share the same language as their ancestors and can communicate with other related species.