The dogs, which are test tube bred in a lab, have twice the muscle mass of their natural counterparts and are considerably stronger and faster.
The canine genome has been especially difficult to engineer and replicate – but its close similarity to the human genome means it has long been the prize of geneticists.
Now the Chinese success has led to fears the same technology could be used to create weaponised super-humans - typifed in Marvel Comics by Captain America and his foes.
David King, director of Human Genetics Alert (HGA), voiced his fears over what is widely viewed as the first step on a slippery slope.
He told express.co.uk: "It's true that the more and more animals that are genetically engineered using these techniques brings us closer to the possibility of genetic engineering of humans.
"Dogs as a species, in respect of cloning are very difficult, and even more difficult to clone human beings.
"There's no medical case for it, the scientists are interested in being the first person in the world to create a genetically engineer child.