Usually between six months and a year old, but it is different for each dog.
A 16 month old boxer that has not had her first heat may have some type of medical problem, such as an underactive thyroid. It is also possible that she has had a "silent heat," which means that she did come into heat but showed very few signs of it. A silent heat is very easy to miss but is perfectly normal.
Pygmy goats may come into heat about once a month. Their heat cycle may last up to 48 hours, depending on the area that you live in.
For a normal delivery lambs are born front legs first.
Dogs are typically in heat twice a year or roughly every six months. That said; you should not breed a puppy. Most people agree you should wait until at least the second or third heat cycle before breeding a dog. Only breed a dog if it is one of the best examples of the given breed. Anything less is only adding to the over population problem.
The smaller breeds of dogs tend to have their first estrus cycle at an earlier age, while the large and giant breeds of dogs may not come into heat for the first time until they reach eighteen months to two years of age
Labs originated from Labrador, Canada.
Black labs do not come from Europe. They originate from Canada on the island of Newfoundland.
Programming, its first major application was UNIX.
WhiteIvorySilverCharcoalYellowChocolateBlack
Canada
it has to heat itself up first
Labrador Retrievers and Border Collies typically experience their first heat cycle between six months to a year of age, with most females coming into heat around 6 to 9 months. However, the exact timing can vary based on factors like genetics, health, and environmental conditions. It's important to monitor their behavior and consult with a veterinarian for guidance on care during this period.
Because labs are careless.
bell labs built one out of early point contact transistors in 1948 before the invention of the junction transistor.
Its a heat between France and Germany.
Between 1890 and 1920
System V