We are animals with all the predatory nature of an animal.
JB,
We are all animals but we aren't just animals. That is why we can - if we work hard - rise above mere animal instinct. The stranger who lays down his life for another is NOT committing an animal or instinctual act. That is an act of bravery or love or devotion to God...it varies but it shows we can do better than how our lower base selves are "wired". We need to promote moral training that reinforces that idea while being clear eyed and alert to those who won't or can't follow such higher counsels.