紧急-小猫拉希很严重

家中来了一小猫， 大概4-5个月大，从昨晚开始拉希，而且有一点失禁的感觉，他昨晚吃了一罐大猫的罐头，可今天Vet closed, Labor Day,Please let me know what kind of staff I can give to him to help, then take him to see Dr. tomorrow?

Thanks