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The real meaning of the word 'resurrection', also known as resurrection biology, is from the Latin word 'resurgo', which refers to the belief that the dead will ultimately be raised and have their bodies restored to them. Many Cristian people believe in resurrection, as it was said that a few days after Jesus died, he 'came back to life' and appeared in front of his followers. According to Brittanica, the "possibility of bringing extinct species back to life was first explored in the early 20th century, through an approach known as back-breeding. Back-breeding, for the production of a breed that displays the traits of a wild ancestor, is based on the principles of selective breeding, which humans have used for centuries to develop animals with desired traits."

Animal resurrection is a process still in research, that consists of the possibility to bring extinct species back to life. This procedure sounds bizarre, but thanks to scientists, it is all becoming real.

One famous example is the woolly mammoth. Matthew Cobb, a professor of zoology at the University of Manchester says that "the proposed 'de-extinction' of mammoths raises a massive ethical issue - the mammoth was not simply a set of genes, it was a social animal, as is the modern Asian elephant,".