No, 11 weeks is way too young. The smaller breeds normally come into their first heat at around 5-6 months and the larger breeds from 6 months - 12 months. If you are seeing blood around the vulva or in the urine then take your pup into see your Veterinarian immediately.
About 8 months old
how do I know if my female dog is in heat?
You don't. If the dog is old enough she'll come into heat on her own (unless she's spayed- then she won't no matter what).
It is actually called going into "heat" and as for when it stops, they will continue to go into heat once or twice a year. They will bleed for about three weeks. Unless the dog is spayed, this cycle will not stop.
Usually between six months and a year old, but it is different for each dog.
Usually between six months and a year old, but it is different for each dog.
No. It's only during a specific stage of the heat cycle when a dog can become pregnant. Once the dog is pregnant, she won't have a heat cycle. Usually the cycle resumes within six months of having a litter of puppies. Three weeks after weaning a litter (usually when the pups are 5 weeks old) the female dog can be spayed, so she will no longer be able to become pregnant.
Typically twice a year. The heat cycle for most dogs is between 6-8 months and can last from 2 - 4 weeks at a time. They can have their 1st season as early as 6 months old.
Minimum 2nd heat, preferably 3rd or4th.
every six months. it all depends on the breed of dog .
Usually between six months and a year old, but it is different for each dog.
Dogs of any breed can have their first heat cycle anytime between 6 and 8 months of age. A female dog gets significant health benefits if she's spayed before the onset of her first heat cycle. A dog should not be bred before she is two years old, or after she's seven years old. A female dog should wait a heat cycle between litters before being bred again.