Always keep a record of the date, the day of the cycle the bitch was bred, the results of the 30-day pregnancy ultrasound or test results, the date of whelping, and the number of pups.

时刻记录相关数据：母犬配种的日期、怀孕30天超声波检查结果或是测试结果、分娩的日期、产下幼犬的数量。