Human beings have long believed that it is our unique level of intelligence that separates us from other animals. Our ability for higher learning, creative thought, and – perhaps most importantly – our sophisticated communication via speech and language, defines us as a superior species. However, as we expand our understanding of how the brain works, and use animal experiments to learn more about the genes involved in intelligence, will we reach a point where we can pull other species onto our intellectual plane?

The idea of enhancing animal intelligence may not be as far-fetched as it sounds. Consider a study published last month by Ann Graybiel and colleagues at the Massachusetts Institute of Technology about the relationship between intelligence and genes. The team genetically engineered mice to produce the human form of FOXP2 – a gene known to be linked to the human brain's capacity to learn and process speech – to see whether it would improve the rodents’ ability to learn. Sure enough, when the boosted mice were made to navigate a maze in order to get a reward of chocolate milk, they learned the route faster than the mice without the added human gene.

The results are exciting for anyone interested in understanding the genetic changes in our prehistory that helped us become the wise – or “sapient” – ape. But the nature of this study speaks to another question: whether through fundamental alterations and improvements to mouse brains we could create sentient animals with levels of intelligence to rival our own – a concept known as “uplifting”.