Although the dragon's breath was a physiological behavior, it was more of a natural magical ability. In their physiological structure, there was something called the basal blood vessel. This was an organ unique to dragons. It was an extremely complex blood vessel that looked like some kind of rubber water pipe. It had a muscular outer layer that could pump blood like a heart.
This outer layer allowed the basal blood vessel to quickly contract and expand from one end to the other, pushing the blood flow to the upper stomach.
That was the source of the dragon's breath.
Dragons relied on their hearts to produce blood flow that gave them the ability to spit weapons and other abilities, while the basal blood vessel was responsible for guiding the energy-rich blood from the heart to the upper stomach of their muscle stomach.
Therefore, the "spit weapons" that humans were accustomed to was actually a misnomer, because the fire, poison, acid, or other substances were released from the upper stomach, not the lungs.
To be more precise, the energy flow was vomited, not exhaled.
Although Caesar had the same physiological structure as the other Black Dragon, unfortunately, his heart could not produce elemental magic like a real dragon, so his breath could not be mentioned.
Therefore, the seemingly majestic dragon's breath had become a sore point for Caesar.
But this time, the deep sleep had changed his physiology. In Caesar's body, a new organ was formed. In the upper layer of his throat, there were three sac-like organs that could secrete a special liquid. Each of the sacs had a tube and valve connected to the organ. The three tubes finally converged into one, and the exit was roughly at the upper jaw of his mouth.
The matching muscle tissue allowed Caesar to freely control the new organs. But he could only spit out the liquid in the sacs. Due to some protective measures, he could not breathe air into the sacs.
"Oh, a strange feeling."
After waking up, Caesar could clearly feel the difference in his body. He could not help but scratch his throat. His throat was itchy, as if something was stuck there.
When he opened his mouth, the itchy feeling became more intense. Caesar could clearly feel that there were three "switches" in his throat that he could control, and his body was ready to move.
Caesar controlled the muscle tissue in his body and decided to try the effect of the implanted spit weapon. When he opened the valve of the first sacs and contracted the muscles, a viscous liquid immediately gushed out of his throat along the tube.
The next moment, the Black Dragon spat out flames.
The blazing flames flashed and disappeared. When Caesar reacted, he immediately closed the valve.
The seven-meter-long Black Dragon covered his mouth, bent his back, and turned his head around like a thief. If others knew that the Black Dragon could spit flames, they would be immediately shocked. Once the news spread, he would immediately attract a crowd.
Fortunately, with the constraint of the God's Oath, the Orcs were not afraid that Caesar would not fulfill his promise. After leaving the specific location of the clan, they rushed back to the tribe without stopping. The two young dragons had already left and their whereabouts were unknown. There was no one in this area now.
"How can I spit out flames? This is not scientific."
Caesar muttered and decided to try again. This time, he stared at the front of his mouth and maintained his focus. His heightened senses allowed him to distinguish the images that flashed by.
After he opened his mouth, a viscous liquid was spat out of his mouth. This liquid was made of an unknown substance. When it met the air, it immediately burned, forming a high-temperature flame.
To outsiders, it looked like the Black Dragon was spitting fire.
Caesar directly burned a small patch of trees to ashes. He tried. Under the control of the muscle tissue, he could freely control the amount and form of the liquid he spat out. In other words, he could spit out a series of flames such as flame jets, fireballs, fan-shaped flames, and so on.
"Ugh …"
Two minutes later, looking at the raging fire in front of him, Caesar burped. The muscles in his sac twitched a few times, and no more fresh liquid gushed out.
In other words, the amount of flammable liquid in the sac could sustain him to continuously spit out flames for two minutes. The burning efficiency of this unknown liquid was very high, and it was quite viscous. Some of the liquid droplets would contaminate the surface of the target and continue to burn.
Although two minutes was a short time, which dragon would continue to spit out flames continuously in battle? Caesar was already quite satisfied to be able to maintain it for such a long time.
Moreover, one should not forget that there was more than one sac in his newly grown organs.
He rested for a short while. When the muscle tissue supporting the sac was no longer sore, he opened his mouth and opened the switch of the second valve.
This time, Caesar clearly felt the coolness in his throat. The feeling of the alternating cold and heat made him sneeze involuntarily. A puff of white gas was spat out.
The white gas dissipated unexpectedly quickly. Before Caesar could understand what was going on, he found that the charred tree in front of him that was still burning with flames was instantly frozen and turned into a magnificent piece of art.
Caesar immediately took a few steps forward and tentatively held the frozen charcoal with his claws. The temperature of the object in his hand was so low that Caesar felt a slight pain in his right claw. He gently squeezed, and the charcoal turned into countless ice shards with a cracking sound.
"Amazing."
He could not help but exclaim in admiration. Such temperature and freezing speed were stronger than any kind of refrigerant he knew on Earth. The form of performance was comparable to the unpredictable ice magic.
"Why does it feel so familiar …"
He stared at the ice shards all over the ground. In his mind, he could not help but imagine the scene of the huge Black Dragon facing a group of human adventurers, shouting "Absolute Freezing Gas" and then blowing on it …
Stop!
Caesar shook his head hard. He was a little embarrassed. God knows where this shameful name came from.
The liquid in the third pouch did not surprise Caesar as much. However, it finally gave him a spitting weapon that could be exposed to the outside world. It was an acid that could quickly corrode objects that came into contact with it.
Caesar had seen Garen and Black Dragon's strong acid breath before, so he could not help but make a simple comparison. His acid seemed to be weaker than the Dragon Whelps in terms of strength, but it had an advantage in terms of quantity. At least the young Black Dragon could not continuously spit out strong acid for two minutes. That would make them vomit out their gastric juices.
After familiarizing himself with the spitting weapon, Caesar was excited for a while. However, he realized the potential danger.
He was a cautious human (dragon). Although he did not know the principle behind the newly grown organ that could produce and store such highly dangerous liquids, he knew that the other organs in his body had not changed.
Therefore, if this key organ was damaged, the liquid would likely leak into the body. If that happened, there was a high probability that it would cause his death directly.
Caesar touched his neck. Fortunately, the new organ grew on the upper layer of his throat and was located at the neck that was covered by his chin. This part was within his protective range. Moreover, if he did not deliberately raise his head, it would be difficult to hurt this part of his body in a normal battle.
"However, it would be safer if I had a large iron chin," Caesar thought as he touched his lower lip.