I have to say it’s it’s not very likely that we could do this. Because the proteins that are made from genes need to work together in a certain way to keep you alive.
This means you would have probably change many genes to have things that work together properly and by the time you change all of those genes then we would probably have the same DNA as the animal that we want to be.
Humans and other animals have thousands and thousands of genes, and lots of them are different. So you would have to change an awful lots of genes, simultaneously, to change a person to an animal. So I don’t think it’s very likely, no.