Etiology (/iËtiËÉlÉdÊi/; alternatively aetiology or Ã¦tiology) is the study of causation, or origination. The word is derived from the Greek Î±á¼°ÏÎ¹Î¿Î»Î¿Î³Î¯Î±, aitiologia, giving a reason for (Î±á¼°ÏÎ¯Î±, aitia, cause; and -Î»Î¿Î³Î¯Î±, -logia).
A female dog will generally stay in heat for about three weeks or around 21 days.However, this heat cycle will vary from one dog to the next. It depends on the breed, the age and the dog herself. A female dog will go into heat twice a year. female dog will generally stay in heat for about three weeks or around 21 days.
Report Abuse. On average a dog stayes in heat for 3 weeks, or 21 days. But some dogs can go only 2 weeks while others may go up to 4 weeks. Just like humans, they all differ.We've owned many dogs and they all vary but average out to about 3 weeks.eport Abuse. On average a dog stayes in heat for 3 weeks, or 21 days. But some dogs can go only 2 weeks while others may go up to 4 weeks. Just like humans, they all differ.