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我们收集着各种热门科技、娱乐、健康等知识的同时，也许还有些“冷知识”我们从未留意过，今天我们来以守望冷知识为主题，了解一些我们可能从未听说过的知识点。 一、猪的头部被切下来会感到极度的疼痛和意识 我们或许从未意识到，但人和动物在痛苦感和意识上是相似的，在进行宰杀初期，如果动物不能瞬间死亡，那么他们就会经历极度的疼痛，就像猪一样。
二、万恶的沃尔玛曾经卖过棉花糖味的吉列刀片 在大量产品的竞争中，一些企业为了吸引消费者，进行了一些疯狂的尝试，沃尔玛就是其中之一。他们曾经出售过将葡萄柚和棉花糖味道融入到吉列刀片的尝试，这样的尝试在市场上并不成功。
三、一只成年蜻蜓的寿命只有1个月 或许我们看见蜻蜓的时候，就意味着它们的生命已经完成了一段很长的历程。一般来说，成年蜻蜓的寿命不会超过1个月，在这个短暂的时期内，他们要完成所有的交配、产卵等生殖行为。
四、猫的大腦更适合思考战术 各种宠物的智力差异很大，狗狗们的智力常常被宠爱，但是猫猫的智力可能被大众所忽略。研究发现，猫猫的大脑构造方式，更适合思考战术和深思熟虑，可能是因为长久的狩猎和存活，使他们获得了这种思考方式。
五、新泽西州存在一个“用炸药捕鱼的季节” 作为一个充满惊喜和神奇的州，新泽西州有着许多让人摸不着头的季节。其中一个最疯狂的季节应该就是“捕鱼的季节”了，这个季节允许捕鱼人使用炸药捕鱼，当然，目的是让渔民可以更容易地捕到螃蟹和梭鱼。
六、世界上最快的动物不是猎豹，而是雨燕 备受瞩目的猎豹可能不是世界上最快的动物，它只是陆地上最快的动物，而空中的动物则要比猎豹快得多。世界上最快的动物是雨燕，它每小时可以飞行120公里的速度。
七、人类唾液中含有一些微弱的止痛剂 我们每天都在产生唾液，但是我们从未想过其实唾液中还含有一些非常微量的止痛剂，这些物质叫做内啡肽，可以在疼痛时缓解我们的不适感。 以上这些冷知识虽然不常见，但是它们却告诉我们可以从各种奇怪的角度看待事物，从而拓展我们的思维。 In English: While we collect various popular knowledge about technology, entertainment, health, etc., there may be some "cold knowledge" that we have never noticed. Today, we will take "watching out for cold knowledge" as the theme to learn about some knowledge points that we may have never heard of.
1. The head of a pig being cut off will feel extreme pain and consciousness Perhaps we have never realized it, but humans and animals are similar in pain and consciousness. In the initial stage of slaughter, if animals cannot die instantly, they will experience extreme pain, just like pigs.
2. The evil Walmart once sold cotton candy flavored Gillette razor blades In the competition of many products, some companies make crazy attempts to attract consumers. Walmart is one of them. They once tried to integrate grapefruit and cotton candy flavors into Gillette razor blades, but this attempt was not successful in the market.
3. The lifespan of an adult dragonfly is only one month Perhaps when we see a dragonfly, it means that their life has already completed a long journey. Generally speaking, the lifespan of adult dragonflies does not exceed one month. In this short period, they have to complete all the reproductive behaviors such as mating and laying eggs.
4. Cats' brains are better suited for tactical thinking The intelligence of various pets varies greatly. Dogs are often loved for their intelligence, but cats' intelligence may be overlooked by the public. Studies have found that the way the cat's brain is constructed is more suitable for tactical thinking and deliberate thinking. This may be because of their long hunting and survival journey that gave them this way of thinking.
5. There is a "fishing season with explosives" in New Jersey As a state full of surprises and wonders, New Jersey has many seasons that people cannot comprehend. The craziest one should be the "fishing season," which allows fishermen to use explosives to catch fish, of course, the purpose is to make it easier for fishermen to catch crabs and bluefish.
6. The fastest animal in the world is not a cheetah, but a swift The highly anticipated cheetah may not be the fastest animal in the world. It is only the fastest animal on land, and the flying animals are much faster than cheetahs. The fastest animal in the world is the swift, which can fly at a speed of 120 kilometers per hour.
7. Human saliva contains some weak analgesics We produce saliva every day, but we never thought that it actually contains some very small amount of analgesics called endorphins, which can relieve our discomfort when we feel pain. Although these cold knowledge are not common, they tell us that we can look at things from various strange perspectives, and thus expand our thinking.