Signs a Dog Has Been Mating

Kelly Roper

Recent visitors suspect their dogs may have been accidentally mated, but they aren't sure what to look for.

Visitors Looks for Signs of Mating

Did My Dog Get Bred?

My 11-month-old Bullmastiff began her season on Sept. 21, 2007, and since that day I have kept her totally away from all dogs. She is going to be bred in the future, and I have a stud lined up for her the next time she comes into heat. Last night I put her in our combination dog house and shed while I put the kids to bed. When I came back outside, I saw a German Shepherd running around the shed. I got my husband and he went out after him, only to find that the dog had managed to push the door open and let my female out. I checked her to see if there were any signs she had been bred, but I couldn't tell if she had been or not.

My question to you is, would there be any signs if she was bred by this German Shepherd? I was only in the house for about twenty minutes. Is that long enough for them to mate and tie? I never saw them tied, I only saw him running around her. Can you give me any information on this? I already called the vet, and I am waiting for a call back from him.

Thanks~~ Michelle

Expert Reply

Hi Michelle,

Twenty minutes would be a little short for a breeding if they actually tied because most ties average about twenty minutes. The male would also not likely still be running around pestering her directly after a breeding. I think you may have got to her in time.

The only major sign of a breeding you might notice is a very distinct smell from your bitch's rear quarter that is more noticeable than any odor related to her heat cycle.

That said, it's still a good idea to follow up with your vet to see what he/she has to say on the subject.

I hope all goes well for you, and thanks for your question.

~~ Kelly

Can One Puppy Get Another Pregnant?

My ten-month-old puppy seems to have just ended her first heat period. I noticed the area around most of her nipples is swollen and hardened. Is it possible she could be having a false pregnancy?

She has been with me at all times on the leash except once a week when she was exposed to my friend's dog who is a tiny un-neutered five-month-old Shih Tzu/Terrier mix male. Is it possible he could have gotten my puppy pregnant at five months of age?

The only other encounter she had was at a farmers market. She was leashed right next to me, but I turned around a small male dog was mounting her. I chased him off, and I don't think he had time to actually enter her. Don't the dogs actually have to tie for the bitch to become pregnant? If that's the case, she should not have been able to get pregnant since there was no tie.

Would it matter that my friend's puppy is only half the size of my puppy? Would it keep them from being able to tie? I really would appreciate your reply to help me figure out if my dog could be pregnant from either of these two situations.

Thank you~~ Sunrise

Expert Reply

Hi Sunrise,

It's possible your dog is just going through a false pregnancy, but she honestly could be pregnant.

It sounds as though you might have fended off the farmer's market dog in time, but I'm not so sure about your friend's puppy. Technically a five-month-old male is likely able to sire a litter, but it doesn't happen that often. However, if he was determined, he could have gotten the job done. The size difference doesn't matter as long as the bitch is willing to accommodate the dog, and fertilization is possible without an actual tie.

That said, I think it would be wise to have your vet examine your bitch to try to determine whether or not she's pregnant. In the meantime, feed her well and offer her a dollop of cottage cheese along with her regular dog food. The will provide her with the extra calcium needed to support bone growth for both her and any possible pups.

Thanks for your question, and I hope all goes well.

~~ Kelly

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Signs a Dog Has Been Mating