The gastric emptying of most cats begins within 15 minutes after eating, and it takes about 1 to 4 hours to completely empty. However, the gastric emptying time of different cats will vary greatly, which is only the result of a big data statistic. However, if the cat has obvious long-term loss of appetite, emaciation, drooling or gastrointestinal abnormalities, such as diarrhea, constipation or stomach murmur, it is recommended to take it to a pet hospital in time.