Dead or dying hairy crabs are not edible, because when hairy crabs are dying or dying, the oxyacid in crabs will decompose to produce triamcinolone acetonide. Anzu is a toxic substance. With the prolongation of death time, more and more crabs are accumulated, and the toxic gas is getting bigger and bigger. Even if the crabs are cooked, this group safety is not easy to be destroyed. Crabs live in water and like to eat dead fish, dead shrimp and other animal carcasses, so they will be infected with some bacteria. Especially river crabs, most of them grow in dirty ponds, and there are a lot of germs inside and outside the crabs. Live crabs can excrete bacteria through metabolism in the body; Once the crab dies, the bacteria in the body will multiply and decompose the crab meat, and some bacteria will also produce toxins. People who eat such crabs can cause food poisoning, and the common manifestations are nausea, vomiting, abdominal pain and diarrhea. In severe cases, dehydration, electrolyte disorder, convulsion, even shock, coma and septicemia may occur. Due to the weather (165438+ 10) and the low temperature of ice packs distributed in each gift box, Yangcheng Lake hairy crabs will stop moving and enter a dormant state. Many times, many people mistakenly think that living hairy crabs are dead crabs. Pick up the bundled Yangcheng Lake hairy crabs and touch your eyes to see if they blink, which means they are alive. Take half a basin of water, put the bound crab into the water, and see if there are bubbles in the crab's mouth, which means it is fresh. Touch the crab claws and straighten the smallest crab claws to see if they naturally bend soon. If it bends naturally, it means it is alive. Untie the tied crab and see if it can crawl. Being able to crawl means that crabs are strong. Thank you for your answer, hope to adopt!