Studies by Prof Andrew Knight from the University of Winchester show how plant-based diets lower greenhouse gas emissions (GHGs), and use less land and water. Food energy savings mean more people can be fed. His major study published in leading scientific journal PLOS ONE on 04 Oct. 2023 demonstrated very large environmental benefits arising from nutritionally-sound vegan diets – for dogs and cats, as well as people.

Prof Knight calculated that if all the world’s dogs went vegan, it would save more GHGs than all those emitted by the UK, land larger than Mexico, freshwater exceeding all renewable freshwater in Denmark, and would feed around 450 million additional people – more than the entire EU.

See the worldwide reaction that these studies generated here.