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What size male dog is safe to breed with my female to avoid risks?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Female | unspayed | 6 months and 11 days old | 35 lbs

Hi, I was planning to breed my adorable female Pin Tzu(Mini Pinscher x Shitzu.) But I'm still confused. For choosing the right breed. Because she might be caesarian if larger dogs will be the Sire(father.) Or is it possible to do so? Without getting my dogs prone to danger. Any help will be appreciated, Thank you! Regards, Christian Joshua T. Day #0237 Dr.Balmores Resd., ST. Bernadette Subd., Santo Rosario,Capas,Tarlac,Philippines.

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on June 14th, 2017

Hello Christian! Mila Mumu is adorable! It is never recommend to breed a female to a larger male due to the increased size of puppies and the subsequent increased risk of dystocia (difficulty giving birth) leading to a c section. I would choose a male who is her weight or small than her to avoid any danger, so pick a breed of male that smaller than she is when she is fully grown. Please know that it is never recommend to breed a dog on her first heat. That's because she will not be fully mature either physically and emotionally, and that leads to an increased risk of dystocia as well as possible poor mothering. You should wait to breed her until at least her second or third heat (around 18 months of age). I hope this helps!

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