The present invention relates to an animal litter for using an animal litter box and a litter box using the same. The animal litter can suppress odors generated from animal excrement evacuated on the animal litter. The animal litter is comprised of a mass of grains having a peculiar liquid passing property whereby most part of liquid poured onto the grains is not held in the grains but passed through them meanwhile other part of liquid remained in the grains is absorbed into the grains. More concretely, the maximum absorbable amount of liquid of a grain is 3 to 4.0 times the weight of the grain, the amount of liquid absorbed by a grain per three seconds is 20 to 70% of the maximum absorbable amount of liquid absorbed by the each grain, and a liquid passing ratio of the mass of grains is 70% or greater.
