Oscar Horta, a Professor of Philosophy who is currently working at Rutgers University has written an interesting and thought provoking article about how speciesism impacts our thinking and actions towards free-living animals. Here is the introduction, followed by a link to the entire piece.
Disvalue in nature and intervention
The fox, the rabbit and the vegan food rations
Consider the following thought experiment. Suppose there is a rabbit and a fox that is about to capture and eat her. We are witnessing this, and we have two rations of vegan food. We consider what to do. Among the different ways in which we could act there are the following three ones:
(1) We eat one of the rations of vegan food and see how the fox catches and eats the rabbit.
(2) We give the fox one ration of our vegan food and we kill and eat the rabbit ourselves.
(3) We give the fox one ration of our vegan food, we eat the other one and the rabbit runs free to live her life.
Please read the whole thing here.