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.
The average female dog has her first cycle about six months of age. A few dogs start earlier and few dogs later, even as late as 14-months. If you have a new female puppy, you should watch her and note when she has her first cycle. If she's 14-months old and still hasn't't been in heat, you should take her to a veterinarian.