First of all, 50lbs at 10 months sounds pretty big to me.....
Boxers generally finish filling out between the ages of 2 & 3 so she has alot of growing left to do.
Our female is 3 1/2 years old & weighs 50lbs.
Although the American boxer standard doesn't give a weight guide the other standards that I have read, (Australian, British & German), all do. In those standards the average fully grown female is said to be approximately between 55 & 65lbs & the average fully grown male is said to be approximately between 65 & 75lbs. 100 lb boxer
WOW
Secondly, wanting to breed with your dad's male.
Do you know about the appropriate health testing that should be done prior to making this decision, has your dad's male had this testing done.
http://www.boxerworld.com/breeders/
Do you know the hereditary history of each dog?
You shouldn't even consider breeding until your female is 2 yrs of age. Only after 2 years of age will your girl be both physically & mentally mature enough. Also other problems such as seizures & temperament may not be apparent until she is 2 or 3 years old.
Finally, wanting another boxer is not a reason to breed your female. The only really valid reason for breeding is for the betterment of the breed, I know that sounds like a cliche but it is true.
http://www.boxerworld.com/puppy/breeding/
Here is another thread that may enlighten you of the reality of breeding..........& yes, this thread is from an experienced reputable breeder.
http://www.boxerworld.com/forums/showthread.php?s=&threadid=4534
There is an awful lot of information on breeding in Boxerworld, please use the 'search' function & spend alot of time researching before you a make a decision.
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MODERATOR EDIT:
Sorry to jump in on your post Matt, but I wanted to add three more links that I stole off of Julie's signature line - SummerBoxer: all of these links are
must reads, but you have 14 months before you'll know if she is breeding quality or not.
http://www.bluegrace.com/virtualbreeding.html
http://www.frii.com/~phouka/puppy/bdr_ethics.html
http://www.dog-play.com/ethics.html
Cub
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