It is recommended to feed cats egg yolks twice a week. The benefits of egg yolks for cats include boosting their immunity, improving their skin barrier, and enhancing their coat quality. However, the frequency and amount of feeding need to be controlled. Generally, it is recommended to feed them twice a week, with each feeding consisting of one-quarter of an egg yolk.

This frequency ensures that cats receive the nutrients from egg yolks, such as cholesterol, protein, and lecithin, while avoiding the threat to their heart and blood vessel health caused by excessive cholesterol intake. Egg yolks are not recommended for older cats, especially due to their declining digestive function. Furthermore, kittens have more delicate digestive systems and should not be fed an egg yolk daily to avoid indigestion.