We vegetarians have always known that plants have consciousness.
But a cow’s brain and nervous system is proven to be much more complex and developed. The nervous systems of higher mammals is not that much different than what we humans have. Cows have a clearly observable reaction of fear when put into a life threatening situation. Their feeling and reaction to pain is probably much more intense.
I respect plant life myself. I just haven’t figured out how to live off of air yet. lol!