Chinese scientists have created 12 pigs that have an average of 24% less body fat than the norm for pigs. They did this by using the gene-editing technique called CRISPR-Cas9, which they used to insert a gene that helps animals regulate their body temperature by burning fat – a gene that pigs lack.
![pig with piglet](https://www.thefuturescentre.org/wp-content/uploads/2020/12/4-q7xhmigve-1280x500.jpg)