Is it safe for a small female dog to get pregnant by a large dog?

Hello, I’m not sure if there was supposed to be a photograph of the male dog attached to this post or not. If you have a large male who breeds with a small female, there is always a concern that she will not be able to have the puppies and will need a C-section. Any small female dog who is having puppies should have radiographs done after day 45 to see how many babies are expected. If you do not want her to have a litter, I recommend calling the veterinarian and discussing getting her spayed ASAP. Some dogs can have a shot to stop the pregnancy but there can be some serious side effects to that. Getting her spayed will eliminate an accidental pregnancy in the future. Getting her spayed also has other health benefits and is recommended for any dog not intended for breeding. I hope this helps and please feel free to post any additional questions!

I would strongly suggest to keep her monitored during pregnancy as c-section may be needed to deliver the puppies. Radiographs at 40 days of pregnancy will be very useful to assess the size of the puppies and make sure they can be naturally delivered. Hope this answer was helpful, but please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further.

It is likely they will be fine. As long as the parents are close in weight (within 10-15 lbs or so, the puppies should be fine. However just make sure to get radiographs when Pixie is beyond 45 days gestation to ensure the feti are not too big to go through the birth canal. I hope everything works out well for your pet Pixie. Best wishes and take care.

Please consult your vet regarding your options immediately. If her eggs do become fertilized, this could be a very dangerous pregnancy for Coco, as she is so small and the male dog is so big. The puppies would likely be so big that she may need a c-section to give birth, and the pregnancy could be life-threatening.

Pregnancy complications really depend on how large the puppies are and how many she is carrying. It is best to work with your vet for regular checkups to confirm the pregnancy, and an X-ray as it gets closer to Riley's due-date to check on the size and number of puppies. Your vet can then recommend if a C-section is needed. Signs to watch out for during labor that may indicate dystocia (difficulty giving birth) include straining for long periods without success, a visible puppy stuck in the birth canal, or no puppies produced after several hours of labor. These are all signs something may be wrong and that Riley should be brought to the vet for care.

Thank you for submitting your question regarding Achoos. Unfortunately, if the puppies are too large for her to safely deliver, then a C-section will be necessary again. She can have x-rays prior to delivery to determine if the puppies can fit through pelvis. There not medications that can be given safely during pregnancy to change the size of the puppies. You may consider spaying her in the future if she continues to have difficulties during labor and delivery. I hope this information helps!

Hi, thabks for using Petco Pet Education Center, formerly Petcoach! The size difference may or may not be a problem. If her litter is large the puppies will be smaller. If she only has one or two she’d be at more risk for needing a c-section. I would have your Vet take an X-ray at day 50 to confirm pregnancy and to count puppies. Write down the date she was bred. Dogs are pregnant 60-63 days. Starting at day 55 start taking her temperature daily rectally. Stage 1 labor tends to start 24 hrs once the temperature drops below 99 F. But your Vet can help you and go over concerns once we know she is pregnant and size of the litter. I hope this helps and good luck!