The DinoRPG mechanics is based on an elemental cycle. All enemies and Dinoz have an elemental strength, and the weaknesses follow according to the cycle. An element is strong against the two elements that follow it in the cycle, and weak against the two that precede it.
Each time a Dinoz reaches a new level, it will receive an increase by one (1) in an element. This element is chosen by lottery, and the probability of getting a specific element depends on the Dinoz breed. The increase in the element brings an increase in the associated assault strength and also in the Dinoz' defenses. It also gives the Dinoz master (you) the chance to choose a skill to learn or unlock within that element.