Well, hang on to your chromosomes baby... looks like we're in for a wild ride...
So far, our mixtures are modest. To make humanized animals really creepy, you'd have to do several things.**********
You'd increase the ratio of human to animal DNA.
You'd transplant human cells that spread throughout the body.
You'd do it early in embryonic development, so the human cells would shape the animals' architecture, not just blend in.
You'd grow the embryos to maturity.
And you'd start messing with the brain.
We're doing all of those things.
RELATED: From related previous comments...
This DNA shit makes people crazy.
I'm with you future-boy... I can't wait for an ape-human hybrid that can wash cars, fetch beers and run a lawn tractor.