The term omnivorous doesn’t mean must eat some animal products. It means capable of subsisting on both plant and animal matter.
Of the two, we are able to thrive without eating any animal products; however, if we eat no plants, we die.
In fact, decades of scientific evidence have demonstrated that humans have no biological need to consume flesh, eggs or dairy products.
We can get all the nutrients we need from plant foods, without the unhealthy animal protein and cholesterol, and without inflicting needless suffering and death on billions of animals."