There aren’t many papers on this—this can be an area where further research/investigation is warranted (I wonder if they ask about diet on the Dog Aging Project, for example?)
https://www.reddit.com/r/veganpets/wiki/faq has a pretty good list of relevant papers. Having a vegan cat is definitely something that would need to be done carefully and close monitoring on urine pH and other things.
How about… just feeding the pet a vegetarian diet?
Dogs can thrive on such a diet—see http://www.cnn.com/2011/LIVING/03/10/vegan.dog.diet/ for examples. One of the longest living dogs was even mostly a vegetarian (http://www.monicasegal.com/wordpress/?p=431 ).
Cats would be harder (as they need supplemental taurine), but some evidence already shows that cats fed a vegetarian diet aren’t deficient in taurine (http://www.petmd.com/blogs/nutritionnuggets/cat/jcoates/2014/jan/can-cats-thrive-on-vegetarian-diet-31187 ).
There aren’t many papers on this—this can be an area where further research/investigation is warranted (I wonder if they ask about diet on the Dog Aging Project, for example?)
https://www.reddit.com/r/veganpets/wiki/faq has a pretty good list of relevant papers. Having a vegan cat is definitely something that would need to be done carefully and close monitoring on urine pH and other things.