We are all quite proud of being able to occupy the top of the food chain. From there we handle and shape the world to our pleasure. We never miss the opportunity to brag about our heroic acts and the development of our history.
However, sometimes we forget that we are not alone on earth and that our friends animals also save lives and even modify the future of humanity.
Here are 10 occasions in which the animals modified the development of our history:
1- The sheep that showed that cloning is possible
The sheep Dolly is one of the most famous sheep in history, since it was the first mammal successfully cloned from an adult cell. Dolly was born in July 1996 and was the only individual who managed to develop from others 277 attempts .
Since then, cloning techniques improved significantly as scientists learned a lot from the study of Dolly, who led a healthy and happy life until 2003.
2- The rats and fleas that annihilated a third of Europe
Una deadly pandemic called the Black Death annihilated a third of Europe (possibly even more) in the mid-fourteenth century. The pest was identified as plague, an infectious disease caused by the bacterium Yersinia pestis . This bacterium infects rats and other small rodents and is transmitted to people by the bite of infected fleas.
The Black Death spread through trade routes from Central Asia to Europe, killing some 25 million people . One of the most surprising consequences was the shortage of labor, which allowed the peasants to request higher wages and better living conditions . Sadly, the death of many was necessary to improve the standard of living of a few.
3- The chimp that changed human understanding
Jane Goodall arrived in Tanzania in July 1960 with the mission of studying the chimpanzees, which were still a mystery to humans. During the first 3 months, the chimps did not show up, but over time, Jane was able to meet David Greybeard a gray-bearded chimp.
After sharing a piece of pork with a female, Jane was able to observe for the first time that chimpanzees were not strictly vegetarian as people thought.
Only a month later, she could observe David introducing a twig into a mound of termites and then take it to mouth. Once David moved away, Jane approached the mound and discovered that the termites clung to the twig. The researcher understood that the chimpanzee had been using a twig as a tool. Until then scientists thought that only humans could create and use tools .
David continued to use other artifacts, and in doing so, changed our conception of chimpanzees and humans.
4- El cat that opened a new chapter in criminology
In 1994, the Royal Canadian Mounted Police found a body buried in a shallow grave with a jacket soaked with blood. An analysis showed that the blood belonged to the victim, but they also discovered a long white hair that belonged to a cat . Police knew that the victim's husband lived near the place where the body was found and owned a white cat called Snowball .
Authorities obtained blood from Snowball to perform a DNA test. It turned out that no laboratory had tested a pet's DNA and none wanted to be the first. After many calls, an institution was encouraged to assist in the case.
Police collected blood samples from approximately 20 cats to ensure that the cats did not have similar DNA. The evidence revealed that, indeed, the hair found belonged to Snowball, so its owner was sent to prison.
This resulted in a new form of finding criminals through the DNA analysis of the pets . Since then the National Feline Genetic Database was established.
5- The fighting cocks that inspired the ancient Greek soldiers