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.
Puberty or sexual maturity in the female dog usually occurs around six months of age. The smaller breeds tend to go into oestrus or heat earlier and some females can have their first heat cycle as early as four months of age.On the other hand, the large and giant breeds can be up to two years old before they come into heat for the first time.he smaller breeds tend to go into oestrus or heat earlier and some females can have their first heat cycle as early as four months of age. On the other hand, the large and giant breeds can be up to two years old before they come into heat for the first time.