Cross Breeds - When do boxer dogs have their first season?

When do boxer dogs have their first season?

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Never if you get her spayed.
7-15 months! That is why vets recommend spaying at 6 months of age.
Never, as long as they are spayed prior to 6 months of age. =D
Normally a dog will have its first heat cycle 6-7 months of age. After it is every six months. It will last for about 2-3 weeks depending on the dog.
At about 6 months
Same time as any other female dog -- generally between 6 and 9 months.
Anytime after 6 months of age. Unless you are planning on breeding I strongly urge you to spay prior to 6 months. This decreases the chances of a lot of problems of the female reproductive system later in life.
same as any other dog any time from 5 to 12 month old
All dogs have their first season anytime from 6months old,they should not be breed at this early stage though
Hiya, most dogs (any breed) will have their first season any time between 6 and 18 months, ofcourse there is the odd exception to every rule. x
Every female is different. There is no true "normal" time. But it is advised to have her spayed before her first season to stop any chances of developing deadly Pyometra or having an accidental breeding. My girls have had their first season usually betwee 9-11 months of age. So spaying your girl between 6-8 months might be safest. Good luck with her :)
Boxers are a fairly large breed, so can be expected to come into season at around 8 - 10 months, but it can be earlier or later. If you plan on having her spayed, wait until she is physically & mentally mature - at around 12 weeks after her first season. That way she has less chance of developing spay incontinence and other serious problems. You will also know that she is not being spayed just as she was about to come into season, which is a more dangerous time to have an operation due to the increased blood supply to the uterus. http://www.naiaonline.org/pdfs/LongTermHealthEffectsOfSpayNeuterInDogs.pdf
anywhere between 6months and 18months.also you should never spay a female dog until they have had their first season as it allows them to mature both physically and mentally.hope you have lots of years of fun good luck.
6months