How often do mini goldendoodles go into heat. Yes its pretty unusual for a female to go past her first birthday without ever having gone into heat. They usually go back into heat 4 6 months after delivering. No mutts should be bred. Your dog is not a goldendoodle she is a mutt.
The larger the dog the longer growing takes. Its typically between 6 and 12 months. It is a myth that the canine heat cycle is every 6 months. Standard goldendoodles may take a month or so longer to reach that half way mark.
A mixed breed dog. Generally your female golden retriever will be between 10 to 14 months old before she has her first heat. Shes a cross between a golden retriever and a poodle. Like most dog breeds goldendoodles generally do the majority of their growing in the first six months of life.
The small breeds can experience their heat cycle three to four times per year while large breeds may only cycle once per year. Goldendoodles kept in clips with a longer hair length need professional grooming every 6 8 weeks. 6 months after she came in heat last it never changes even if she has puppies she should come in heat when her puppies are around 4. Only higher apes like humans have periods.
If you keep your goldendoodle in a shorter clip you can take her for grooming every 8 10 weeks. Dogs dont have periods. Some smaller dogs may go that often but golden retrievers do not. Although the time intervals can vary between breeds most female dogs will go in heat twice per year usually every 6 months.