Why did a pig become a yellow cow?!

This scientific report hasn't been published at any place else. This discovery is new and genuine.

Why did a pig become a yellow cow? Did the pig become a cow first then turn to yellow color or did the pig turn to yellow first then become a cow? What was the pig's original color? I can not tell you for sure. Most likely it was pink.
How did the pig become a yellow cow? Was there DNA being transformed? Or maybe being a pig is its genotype and being a yellow cow is its phenotype. Or is it possible that its DNA transformation is reversible that it can be transformed between a pig and a cow?
How did the color change? Maybe the promoter triggers both the pig-to-cow transformation and the color change. This is a little bit like "all or none" process. No transformation, no color change. Thus you will not see a yellow pig or a pink cow.
Does the transformation happen only at specific days? It probably depends on which steady state the pig or the cow is at. This will need a longer period of time of observation and experiments. I am planning to collect more preliminary results to write a grant for continuity of this research. If my grant gets funded, I will report to you on our research progress.