From infancy to the end of the whole species, it is composed of five forms.


    Stage I: xenogeneic eggs.


    Xenogeneic eggs are very sensitive to the surrounding environment. If any race approaches it, it may cause it to start hatching. Worse, it will be attacked by face hugging insects.


    The second stage: face Hugger.


    As soon as the xenogeneic eggs begin to hatch, the face Hugger has two purposes: survival and finding a host. The face Hugger is small, moves faster, and has amazing leg strength. Once it finds the host, it will jump on its face, pry open its mouth and inject the xenogeneic embryo into the body from its throat. At this time, the face Hugger will supply oxygen to the host to preserve its life. After the embryo is injected, the mission of face hugging insects has been completed, and they will die automatically.


    The third stage: xenogeneic embryo.


    Injected from the host''s mouth by the face Hugger, it is a heterogeneous fetal period. It parasitizes in the host, absorbs the host''s DNA, uses it to transform and improve itself, and changes the host''s DNA to maintain the host''s life.


    Stage 4: chest breaker.


    This is the last stage of xenogeneic embryo growth. They have the genetic characteristics of their host. Once they grow up, they will choose to leave the host and kill the host by breaking out of the chest.


    Before growing into an adult alien, small aliens can only bite their opponents with sharp main jaws, but they try to avoid fighting. Because they have no feet, they can only crawl on the ground. They need meat food and shed their skin to grow into an adult alien.


    The fifth and final stage is the adult alien.


    It has to be mentioned that there is no human figure in the life hosts Chen Feng found for these heterogeneous species. It is not that human genes are not suitable for fusion. On the contrary, humans and other intelligent creatures are the best phagocytic offerings of heterogeneous species.


    However, it should be noted that xenogeneic species have the ability to absorb host genes, that is, not only the ability of the body, but also the wisdom in the mind may be inherited.


    Is a brown bear terrible?


    of course!


    This behemoth can even run as fast as a cheetah in an instant. In addition, the raised palm can easily reach hundreds of kilograms.


    Imagine what a terrible picture it will be when this monster has no less wisdom than human beings!


    Different species cannot devour intelligent creatures. This is not only Chen Feng''s idea, but also the experience of countless years in the abyss.


    If the alien species absorb the so-called conscious consciousness, they are likely to become a second form in the process of cultivation.


    Mixed species.


    It has heterogeneous hard external structure, acidic blood, scorpion like tail and hidden mouth;


    More importantly, the DNA obtained by humans from the "mixed race" has changed the reproductive mode of heterogeneous species. He has abandoned the traditional "Queen system" of this race - laying eggs, entering the host body from the face Hugger, and breaking through the host''s chest... In this cycle, he has completely invented a more aggressive and efficient reproductive system.


    Viviparous.


    Moreover, because it is a taboo in itself, they have no human relations, that is, in theory, mother and son, brother and sister, father and daughter can give birth to new mixed races by mating.


    Compared with ordinary alien species, it needs to find a host to complete evolution. This kind of alien species has no too many restrictions. It only needs to mate and reproduce, so as to repeat. In a short time, a huge population will appear.


    In the abyss, there have even been some mixed race riots. With wisdom, mixed races do not meet the current life, but occupy more territory by means of plundering and killing.


    This caused the devil''s panic. In the participation of countless demon lords, after decades, when the number of dead and injured demons exceeded one million, the mixed race rebellion was calmed down. Since then, not only the demon family, but also the heterogeneous queen, also set orders not to allow people to integrate heterogeneous and intelligent creatures at will.


    Chen Feng wouldn''t do such a stupid thing.


    He generally kept a distance from such crazy experiments. It was because of this that he ordered Lu Wei to bring wild animals and insects. Compared with humans, these monsters inherited only terrible combat power.


    The face Hugger stuck to the red tiger''s face. This situation lasted for a period of time, and then the face Hugger fell to the ground.


    Everything seemed to be calm again. Even the red tiger slowly woke up after a period of rest. He looked at everything around him at a loss and couldn''t confirm what had happened just now.


    Chen Feng waited quietly.


    After the past five minutes, the red tiger had some changes. At first, it was difficult to sit and stand, and then gave a wail, as if it was suffering some severe pain. After a moment, it began to cough up plasma, including some blood clots in its internal organs.


    "Oh..."


    The red burning tiger uttered a wail. The king of beasts, who should be worshipped by countless beasts, now uttered a sad cry.


    "Pooh!"


    With the sound of royal clothes tearing, a scarlet head suddenly appeared in the belly of the red tiger. It was round and red, but it had a pair of narrow eyes and sharp teeth.


    It is hard to imagine that the other party''s evolution speed should be so terrible. A few minutes ago, it was still an insect without any destructive power. At this time, it became this aggressive appearance.


    The fourth form of heterogeneous.


    Chest breaker.


    After capturing the gene of the red burning tiger, it had several lines on the tiger, and its breath was extremely cruel and bloody. At this time, it seemed to notice the master''s breath and turned its face directly to the trainer.


    "Sa Sa..."


    The harsh scream made the trainer pale immediately. Even if he was in order, he was a little famous expert, but he had never seen such a strange monster.


    Chen Feng nodded with satisfaction.


    Compared with mixed race reverse species, these reverse species in the form of wild animals are easier to control, and the growth rate of each other is extremely rapid. After becoming a chest breaker, they can evolve into a whole in about half a month.


    Because of his long journey, he took away half of the dark Department members. These aliens just stayed to supplement their combat power.


    "Hatch the other eggs."


    "From now on, you are characterized as members of the dark Department, controlling these aliens and responsible for the security of order."


    "The treatment is doubled, and the heterogeneous meat is also specially managed by the order."


    Just now, several animal trainers also showed a look of hesitation. After all, they always had some doubts about mastering such a fierce animal, but people died for money and birds died for food. After hearing all kinds of rewards given by Chen Feng, they ignored hesitation and directly knelt on the ground and answered.


    …………………………