Generally between 9 and 11 months old.. This has been my experience after breeding them for several years . But I can tell you if you leave them exclusively outdoors and you have a hot summer 83 degree or above consistently that could delay their heat cycle.
Mini Australian Shepherds typically go into heat for the first time between six to twelve months of age, though this can vary by individual dog. They usually experience estrus cycles approximately twice a year, lasting around three weeks each time. Signs of heat include swelling of the vulva, increased urination, and behavioral changes. It's important to monitor your dog during this time to prevent unwanted breeding and manage any behavioral changes.
Toy Australian Shepherds typically reach their full adult size by around 12 months of age. However, they may continue to fill out and gain muscle mass until they are about 18 months old. It's important to provide proper nutrition and care during this growth period to support their development.
This depends on the size and age of the dog. First time mothers will have smaller litters, for German Shepherds, probably 7 to 9 puppies.
Maybe if in a really humid environment, but generally German Shepherds are healthy... Some of its health problems develop due to old age...
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When they become sexually mature but a female should always miss her first.
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The average age for a first heat cycle is around 6 months of age. Although, larger breeds can have their first heat stage as late as 18 mths.
It depends on the breed and weight of the heifer, but I have seen Holsteins as young as 6 months in heat. However, this is not a recommended age to begin breeding.
Both genders are fertile all of their life, A female shouldn't breed after the age of seven though.
It depends on her age and size when she has her first 'heat' normally it is best to wait until she is 10 to 12 months old.
When they are sexually mature.