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.
Most dogs go into a estrous cycle within about 6 monthes of age some up to about 14 monthes of age. Dog's estrous cycle usually lasts three weeks, meaning she can get pregnant in that timeframe Dogs go into heat about 2 times a year, some up to 4 times a year
every six months. it all depends on the breed of dog .
There is a possibilty that the male cat may be reacting to the female dog in a weird way if he is the only cat in the household. If the male cat is not fixed - that could be a reasoning why as well. Keep them separated for a while. You don't want to irritate a female dog when she is in heat.