In general, males are bigger than females anyway. But if you're trying to breed a female mini to a standard male then you'll probably have issues. Otherwise, you're probably ok.
Other things to take into consideration is coloring. You should never breed a merle to a merle because you will have a chance of having double dilute puppies what are often deaf, blind, and have other health issues.
If you are every in doubt, double check with your veterinarian. If you are not in touch with a vet for the whole breeding process then you shouldn't be breeding at all. A vet will do all the genetic testing pertinent to the breed, as well as breeding soundness exams on the female and male, as well as prenatal and neonatal care.
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Higher risks. And 25 lbs is WAY undersized for a purebred Australian Shepherd - sounds like she is either poorly bred or actually a mixed breed.
Get her spayed.
In general, males are bigger than females anyway. But if you're trying to breed a female mini to a standard male then you'll probably have issues. Otherwise, you're probably ok.
Other things to take into consideration is coloring. You should never breed a merle to a merle because you will have a chance of having double dilute puppies what are often deaf, blind, and have other health issues.
If you are every in doubt, double check with your veterinarian. If you are not in touch with a vet for the whole breeding process then you shouldn't be breeding at all. A vet will do all the genetic testing pertinent to the breed, as well as breeding soundness exams on the female and male, as well as prenatal and neonatal care.
If the smaller one is the female, there most definitely is a ton of risk involved.
The Aussie standard isn't that wide, why are you looking to breed substandard dogs?
No, there's no point to breeding an out of standard dog, it's just creating more junk.
Yes there are higher risks.
http://i40.photobucket.com/albums/e224/GLLNTKNIGHT...
http://i40.photobucket.com/albums/e224/GLLNTKNIGHT...