[insertUsername2]

I don't think the intent of the article is to indicate that we are not animals but to point out that we should apply more of the way on how we treat other humans to how we treat animal because the difference we thought were between animals and humans are really much smaller than we thought and in many cases we are much closer than many of us want to belive.

[insertUsername2]

The subtitle even says: "Animals are more human than we’d like to admit"

So all humans are animals but not all animals are humans which is correct. You could also say "human" in this context is used as in "human behavior". Not sure.

However, I as well would have greatly have prefered: "Humans are more animals than we’d like to admit"