PrettyLitter is an American pet wellness company based in Los Angeles, that produces lightweight crystal-based cat litter that is designed to react to a cat's urine to indicate potential health problems by changing color based on the acidity, alkalinity or the presence of blood in a cat's urine. PrettyLitter also produces health-focused cat food. In May 2021, PrettyLitter was acquired by Mars for a reported $1 billion.