In medicine, etiology refers to the many factors coming together to cause an illness. It is normally the focus of epidemiological studies. The etiology of scurvy is a good example. With scurvy, sailors going to sea often lacked fresh vegetables.
So, how long are dogs pregnant? The answer varies depending on several factors, but the average length of gestation, aka pregnancy, lasts between 58 to 67 days, with 63 days being the average delivery date.
How Long Do Hormones Stay Around After Spaying a Dog? 7; Do a Female Dog's Nipples Stay Swollen if She Got Pregnant? 8; Is Swelling Normal for a Dog on Their Period? 9; How Long Before Labor Will a Dog Begin to Lactate? 10; Can a Female Dog Secrete Milk if She's Not Pregnant? 11; Do Female Dogs Start to Discharge When They Are About to Give Birth? 12; How Long After the Baby Puppies Are Born Does the Mother Give Milk? 13; What Should Nipples on Laboring Dogs Look & Feel Like? 14; Are Male Dogs Attracted to Females About to Give Birth? 15; Can a Girl Dog Have Puppies From Two Different Dogs? 16