Animals, theology and the incarnation

How does an understanding of the non-human lead us to a greater understanding of the incarnation?

Are non-human animals morally relevant within Christian theology and ethics?

Is there a human ethical responsibility towards non-human animals?

In Animals, Theology and the Incarnation, Kris Hiuser argues that if we are called to represent both God to creation, and creation to God, then this has considerable bearing on understanding what it means to be human, as well as informing human action towards non-human creatures.