The stomach has three types of contractions: There are rhythmic, 3 per minute, synchronized contractions in the lower part of the stomach, which create waves of food particles and juice which splash against a closed sphincter muscle (the pyloric sphincter) to grind the food into small particles.
7 What is the gestation period, how many babies do they have, and when are they weaned? 1  The gestation period for rats is 19â22 days, for mice it is 17â21 days.  Rats and mice average 8â12 babies in a litter, but can have as few as 1 or as many as 20.
Few studies have examined caracal reproduction in the wild. However, females average 1 litter per year and the gestation period is between 62 to 81 days. Caracal litters range in size from 1 to 4 with an average of 2 kittens. Kittens are thought to start eating meat at 4 weeks, and are weaned at 4 to 6 months.