Cats eat mice to supplement taurine. Taurine can help cats improve their night vision. However, cats themselves cannot produce taurine and need to obtain it from the outside world. Rats contain a large amount of taurine, so Cats obtain taurine by eating mice.
Tip:
In addition to mice, fish, animal liver, beef, and seafood also contain taurine. Among them, seafood has the highest taurine content, and beef has the lowest taurine content.