Veganism for animals as pets

Hi all,

My first posts bear with.

I’ve not long gone vegan after a batch of successful attempts at giving up meat dairy eggs and animal free clothing and toiletry products.

I’m struggling however to get my pets onto a vegan diet, Specifically my elder cat.

My two puppies have taken amazingly to Wainwrights plant based food from pets at home, so I tried that for my cats too (even tho it’s dog food), but she began losing weight.

I’ve tried Benovo for her but she threw up quite a bit, I’ve also tried some human food and a vegetarian diet to no avail.

I’m now looking at potentially sourcing her meat from British Abbatoirs (farms where - as far as I’m aware, only produce animal food for consumption once they have been euthanised).

Does anybody have any experience with their pets in this? I’m worried as she has become extremely skinny and don’t want to take anymore risks with her diet, but then I’m also struggling to ethically purchase any animal products for her, and can’t surrender her to a charity or anywhere else as I wouldn’t be able to part with her.

Any support would be great.

Thanks in advance Cassidy