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.
For the most part, itâs better to wait until a dog is at least two years old before allowing her breed. You want to make sure her body is fully developed and can handle the strain of giving birth to a litter of puppies. Female dogs normally go into heat twice per year, with each cycle lasting approximately 21 days. A mature female dog may go into heat every six months, although itâs common to skip some cycles. The period is characterized by a swollen vulva, a bloody discharge and mood changes. Itâs important to note here that these changes only mark the beginning of a dogâs heat period; they do not mean sheâs ready to mate.