NEW YORK, NY - AUGUST 15: White House Chief of Staff Gen. John Kelly looks on as US President Donald Trump speaks following a meeting on infrastructure at... Drew Angerer The disconnect between the White Houseâs John Kelly and his boss
While many females will hold to a fairly steady schedule of coming into season about every six months, it can vary. Some girls will only come into heat once year, while others may even come into season every four months. However, these extra seasons are not always fertile.
Once estrus begins, it may take awhile for the cycle to become regular. Some dogs can take up to eighteen months until their cycle becomes regular. Itâs a good idea to keep a record during these early days. Once it does, the average is about every six months. Smaller breeds may go into heat more frequently, as often as 3-4 times a year.