UK regulators have issued the first approval for a company to use chicken cells grown in the lab as an ingredient in pet food.
https://www.wired.com/story/lab-grown-meat-for-pets-was-just-approved-in-the-uk-meatly/
https://www.wired.com/story/lab-grown-meat-for-pets-was-just-approved-in-the-uk-meatly/