The guinea pigs in the laboratory, to put it nicely, are generally mild in temperament, and to put it in a bad way, they are called group stupidity, I don't know if it is because of inbreeding.
Recently, Zheng Tan often heard these mentioned in Jiao Dad's genetics course ppt, so when he saw the cage of mice, Zheng Tan felt that it was really similar to what Jiao Dad said. He really did not learn from there. A few mice saw fear in their eyes, and they might even think that the breeder was here, busy begging for food.
Dad Jiao grabbed a white mouse from the cage and put it on the table, and sighed to Zheng: "Look at it, don't let it run around."
Zheng Tan looked at the guinea pig who had no idea that he was about to face doom, and raised a paw to press down on the guinea pig's tail. The mouse whose tail was held down did not struggle too much, but just showed a posture of crawling forward.
Look, this is the gap between wild and domestic. If those mice outside are held down by their tails, they will either struggle to break free or take a bite.
Jiao Dad put the cage with the remaining four mice into an empty cardboard box, so that they could not see what was happening outside.
"I don't know how your cats catch mice, or how to kill mice. I'm just going to tell you about our usual methods."
As he said that, Dad Jiao took the white mouse from Zheng Tan's paw.
"Let me tell you, in the domestic laboratory, the method of death by breaking the neck is basically used, which is also the method of killing the mice with the least pain. Speaking of Animal Welfare…”
Zheng Tan squatted beside him and watched silently. He knew that Jiao Dad had entered the teaching state again. Sometimes after Jiao Dad prepared the teaching PPT at home, he would try the lecture once, and the listener was Zheng Tan. Therefore, as soon as Zheng Tan heard Dad Jiao say the words "I'll tell you", he knew that he had entered the teaching state again.
"To be killed by severed neck, to put it bluntly, the cervical vertebra is dislocated, so that the spinal cord is separated from the brain stem. One hand uses a tool or directly clamps the neck of the mouse, the other hand grabs its tail, and pulls it violently with both hands. , that's it. This is one of the methods, and the other method we often use, you can also try it and see... "
As Dad Jiao spoke, he grabbed the mouse's tail with his left hand, and moved his right thumb and index finger to the mouse's neck and pressed it down.
Then, there is no then.
Zheng Tan looked at the guinea pig who was motionless on the table, and then looked at Jiao Dad, who had an "I'm optimistic about you" expression, and tugged at his ears.
"Look, the operation is actually very simple. It doesn't matter if you haven't caught a mouse before, just practice for a while. I've seen the speed at which you beat Ah Huang, and it's definitely not a problem to catch up with the mouse."
Ah Huang in Papa Jiao's mouth is a yellow tiger cat, and one of the bad friends Zheng Tan has met since he became a cat. Unlike the "sheriff", Ah Huang always does some ridiculous things, many of them. When Zheng Tan saw it, he wanted to go up and smoke it, but Ah Huang didn't show up much recently, and he didn't know the reason.
Jiao Dad caught another mouse and let Zheng Tan try it himself.
Zheng Tan killed the first one and pressed it three times before the poor guinea pig was completely suffocated.
When killing the second guinea pig, Zheng Tan used too much force, but at least this guinea pig died without feeling any pain. Zheng Tan felt even more fortunate in his heart that he had changed into a cat instead of a mouse. One step down the food chain pyramid would have to face one more hell.
"It's easy to dislocate the cervical vertebra. The cervical vertebra of the mouse is very fragile. You are mainly unskilled in the technique," Jiao Dad said, "Don't hesitate to take action, it is best to be successful once, otherwise the mouse will be very painful. , however, note that the spinal cord and the brain are broken, not the head directly. This requires controlling the degree of force. It is necessary to break the cervical vertebra without pulling the head off. Some of the students I took before had problems with force. It directly caused the pressure in the mouse's eyeball to be too high, and the eyeball broke."
Zheng Tan: "..."
Nima is so scary!
Zheng Tan looked at Dad Jiao's calm face when he said these words, and suddenly felt that there seemed to be a cold light in Dad Jiao's eyes.
Zheng Tan remembered the topic they talked about when he was in a nightclub with a group of alcoholic and meaty friends. At that time, someone said: "Actually, the most powerful killers are not those who look fierce on the outside, not those who wear big knife tattoos and wear nose rings. Perfect people, not those who use knives and guns all day long to make themselves arrogant, but those who don’t look abnormal at all but can easily take their lives in the next moment without changing their face.”
Therefore, some senior experimenters are somewhat similar to the killer's temperament from a certain point of view.
The experimenter who enters the experimental state is really terrifying!
Zheng Tan thought for a moment, perhaps, Associate Professor Jiao is the only person in the world who teaches his cat how to kill a mouse with the broken neck method
Zheng Tan obviously felt a lot better when killing the third and fourth mice, at least giving these two guinea pigs a decent way to die compared to the previous two.
Of the five guinea pigs, Jiao Dad killed one as a demonstration, and Zheng Tan killed the other four.
After cleaning up the five dead mice, Jiao Dad turned around and went to the back room again, and he would come out with a larger cage. There were still five white mice inside, but they were much bigger.
"This is a rat. The white rat used in the laboratory is an albino variant of the brown house mouse. It still uses the method just now, but it needs a little more strength. It's still a little bit. Find the key, control the strength, and hit it. I need to do it. Demonstration?"
Zheng Tan shook his head.
"Good boy."
Zheng Tan: "..."
As Dad Jiao said, the rats were a little bit more difficult, but after the five rats tested, Zheng Tan was also proficient.
"Do you still need to practice?" Jiao Dad asked.
Zheng Tan shook his head.
"Very good, let's get rid of mice here, let me tell you..."
Zheng Tan tugged at his ears: "..." He came again.
Although the mice have been killed, Jiao Dad's teaching status has obviously not completely quit.
"In our laboratory, in addition to the cervical dislocation method commonly used to kill rats and mice, there are also methods such as decapitation, bloodletting, beating, anesthesia, and poison gas. , a needle is enough, uh... Next week, I will take the zoology and anatomy class to dissect a bullfrog, and I will bring one back to show you. Oh, and you need to pay special attention, the laboratory is used for killing cats and dogs, etc. Most of them are executed by air embolism." After a pause, Dad Jiao looked at Zheng Tan and said, "Do you understand this?"
Zheng Tan shook his head, his muscles were a little stiff, and the hair on his back and tail was still exploding, and he always felt that the surrounding temperature was very low.
"In layman's terms, the method is to inject air into the vein."
Zheng Tan shuddered. This is understood, even if he is not very knowledgeable in this area, he knows what will happen when air is injected into the vein.
"Air enters the blood circulation to the lungs and blocks the pulmonary arteries and can cause severe shock or death. For example, when you swim from deep water to a dive, the pressure change causes the air in the lungs to expand, which in turn causes the lungs to over-inflate. If It is quite dangerous to not remove the excess gas or not to remove the gas at all, and some of the passengers who fell into the water on the Titanic died like this."
Dad Jiao suddenly thought that talking about the Titanic to a cat would be useless, so he turned back to the topic and made a summary, "So, you must pay attention to yourself in the future, stay away from dangerous objects, and pay attention to self-help."
After practicing the technique of killing mice, the goal of tonight was achieved, and Zheng Tan also had a clue in his heart. Although he is very helpless about catching mice, since it is a cat now, probably only cats that catch mice can be recognized. Even the second-hand A Huang can catch them. Zheng Tan believes that he can do it.
When he returned to the East family compound, Zheng Tan saw a car parked over the open space, a familiar face with a military badge.
That being said, the fat guy also came back after his relatives.
While Dad Jiao went to the parking shed to park, Zheng Tan jumped up to the balcony on the first floor and looked inside.
There was a bag of instant noodles on the desk by the window, and a fat raccoon cat was squatting on the instant noodles.