If two male dogs mate with the female on the same day, it's a straight swimming race between the sperm as to which reaches the ovum first and fertilizes it. If different males mate with the female on different days, she can fall pregnant by both of them.
Since sperm can remain in the female dog's reproductive tract for up to seven days, female dogs don't have to ovulate on the day they mated to become pregnant. If a female dog has mated with two or more male dogs, she can have puppies from different dads in the same litter.
The fertility rate in a slip mating is not quite as good, as there is often some spillage of semen when withdrawal occurs prior to the locking phase. However, conception is still possible and even likely, providing ejaculation occurred prior to the dogs' separating.
You might be tempted to try to separate dogs when they're stuck in a copulatory tie during mating. But hold up: Pulling dogs apart can seriously injure them and doing so won't stop a pregnancy from occurring. Instead, encourage your dog to remain calm.
Male dogs have homosexual sex under a variety of circumstances. They mount each other in dominance displays, and that mounting can involve anal penetration. (This is probably what happened in Tennessee if, in fact, there was even sex involved.)
Most dogs, given the opportunity, will end up mating when the female is in heat. A whopping 40% of female dogs will fall pregnant after just one mating session! That incredibly high number means you are at considerable risk of having a litter of unwanted puppies if you are not careful.
It also appears that being in a "tie" ups the chances for pregnancy in dogs. A tie occurs when the male and female dog are stuck for some time. However, some dogs have also become pregnant without a tie, and some dogs don't get pregnant despite tying, so it's not a guarantee.
So, can puppies in the same litter have different fathers? Yes! Female dogs can be mated by more than one dog during their fertile period meaning a mixture of sperm is present and waiting to fertilise her eggs when she ovulates. The technical term for this is superfecundation.
It's called a “copulatory tie”. Don't do anything to try to separate the dogs, especially pull them apart by force, which could hurt them! Stay calm and wait for the dogs to unstick themselves. If they're still stuck together after an hour (which is unlikely to happen), call your vet to get advice.
The sperm will last inside her for about five to seven days, so if you breed her as soon as she is willing, then breed her again every two or three days until she is no longer willing to allow the male to mount; this means all of her eggs will be fertilized.
1. Brown antechinus. For two weeks every mating season, a male will mate as much as physically possible, sometimes having sex for up to 14 hours at a time, flitting from one female to the next.
Offspring from a mother-son mating would, therefore, have a 25% chance of inheriting two bad copies of the mutations that have been passed down to the son. This is a greater than 100-fold risk compared to an outbred dog! Inbreeding in dogs has real consequences.
Female dogs can't get pregnant when they aren't in heat. Not only are they not fertile, but their reproductive organs won't open for penetration unless they are in heat so they can't even engage in intercourse.
The most obvious sign your dogs mated is that your female becomes pregnant. If the dam's heat cycle ends, their nipples begin to swell, and they show less interest in food within the first week or two after the suspected mating, contact your veterinarian as there's a strong chance the female dog is now pregnant.
How many times should a dog mate to get pregnant? Although a dog can get pregnant from one mating, most stud dog owners will recommend the dogs mate two (or even three times), usually 24 – 48 hours apart each time, but this may depend on whether a tie or a slip mating has been achieved.
During breeding, the female will stand with her feet planted and her tail off to the side. The male will mount her, and after breeding will remain attached to the female for 5-20 minutes; this is called the tie. It is natural at this point for the dogs to be joined facing in opposite directions.
If different males mate with the female on different days, she can fall pregnant by both of them. This is because the sperm survive for days in her tract, and are ready and waiting when she does ovulate.
Dogs remain stuck together at the end-stage of mating for five to 45 minutes, says Greer. The male dog dismounts and ends up rear-to-rear with the female. Dogs new to mating may experience a bit of anxiety at being locked together, but it's a natural process.
Dogs scream when mating for many reasons, including stress, anxiety, pain, and being bred too early. Always supervise your dogs as they mate to prevent injuries and stress.
Since each female dog may have six or more puppies with each mating and they may mate twice a year, the pet overpopulation problem can only be resolved through spaying and neutering programs.
Yes, a neutered dog can still lock (have sex with) with a female dog, as the neutering procedure only removes a dog's testicular sacks. While neutered dogs cannot impregnate a female dog and therefore make babies, they can most certainly still have sex.
Breeding and getting your dog pregnant on her first heat can also pose health risks for both your dog and her pups, like bad genes being passed on, and behavioral changes like aggression.
Answer: When a dog is in heat, they tend to be willing to mate when their bleeding starts getting more diluted and pinkish. It is normal for a dog in estrus (heat) to continue to have bleeding even after they've been bred.
While male dogs do not go into heat, they do react to females on heat. Male dogs can detect the female's pheromones emitted during oestrus from great distances as early as six (6) months of age.
For most females, the best time for breeding is between the tenth and fourteenth day of estrus. However, some females ovulate as early as the third or fourth day or as late as the eighteenth day. It is normal to arrange for two matings (also called stud services) for your dog, often 24 to 48 hours apart.