Because the body of mice contains an essential substance needed by cats, taurine, which cats cannot synthesize by themselves and can only be obtained by eating mice or acquired supplements. Taurine can nourish nerves and enhance vision, and is very useful for cats. Rats contain a large amount of taurine in their bodies, so cats like to eat rats. If the cat at home cannot eat mice, the owner should buy taurine products to supplement the cat.
