Reducing the amount of livestock used in food would free up land, reduce emissions and save animals from slaughter.
The collective weight of all cats on Earth is almost double that of the Researchers have now begun to quantify the environmental impact of pet diets and how that could change if they went vegan
This is because 6kg of plant protein are required to produce 1kg of high-quality animal protein so cutting out livestock would mean there are more calories available for people – and pets. Professor Andrew Knight of Griffith University, Australia, estimates this would stop the slaughter of around seven billion livestock animals and billions more aquatic creatures.
Vegan pet diets are usually formed from plants but they could in future also be made using yeast, fungi or seaweed, as some companies are using to develop meat alternatives for humans.
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