Is EA sleeping on making dogs and cats vegan?

New paper on plant-based diets for companion dogs and cats: Sustainable Pet Diets: A Leading Effective Altruism Issue.

The paper argues that transitioning companion dogs and cats to plant-based diets is:

  1. Important – a full global transition would apparently spare around 7 billion land animals each year (and reduce environmental harm, and improve food security).

  2. Tractable – 13 to 19% of guardians are open to plant-based diets for their dogs/​cats if their concerns are addressed, according to two recent surveys.

  3. Neglected – annual global funding for tranisitioning companion animals to plant-based diets is well below $1m.

If the numbers hold up, the case seems strong! But I’m curious about the counterfactual impact of transitioning companion cats and dogs to plant-based diets, especially given that humans wouldn’t eat or use some of the animal-derived food that companion animals are fed. What do people think about that, and how do the numbers and arguments look in general?