As she explains, there is not an exact known time when dogs have been proven to perceive hormone-related changes to human pregnancy; however, there are significant hormonal changes that begin the second week after fertilization.
“Your dog is smart enough to pick up on these changes during pregnancy, both in a physical way — which is how your body will be changing, your stomach, your smell — and in an emotional way, such as your feelings and your mood,” she says.
Regardless of your lifestyle or location, you can expect your dog to be able to sense conception, as soon as you are pregnant. Moreover, the signs of pregnancy among women are fairly universal, including hormonal changes in addition to changes around the home.
Depending on the dog's personality and the physical and emotional shifts of the pregnant woman, a dog may display one or more of these behaviors: Increased affection for — and protection of — the pregnant woman. Agitation, growling, barking and/or being uncooperative. Urinating around the house.
Changes in your pregnancy hormones
And research suggests that the hormones emitted by your body can lead to a change in body odor that's detectable even by other humans. Therefore, it stands to reason dogs might also pick up on the hormonal changes that occur during pregnancy — in essence, smell that you're pregnant.
Your body chemistry changes
Yes, it's possible that cats can sense pregnancy even before you have early pregnancy signs. This is due to their excellent and refined sense of smell.
Have you ever wondered why your pet loves snuggling up to your bump so much? Experts at Animal Planet have revealed that your canine friend is probably responding to a change in your scent caused by all the pregnancy hormones flooding through your body.
It is completely possible that your dog can hear an unborn baby's heartbeat in the womb. They may also be able to hear your baby cry in the womb, which can start at about 28 weeks. No matter what they are hearing, it is unavoidable that dogs know that there is something going on in the body of a pregnant woman.
Dogs can, however, feel and see the baby move, and they can hear it make noise in the womb. All of these little things help your dog bond with the baby before it is even born. This bond can make introducing your pooch to the baby a little easier.
“[Dogs] can't communicate with humans in the same way [that] they communicate with other dogs, so they try and get your attention by nudging you or bumping into you,” Rice told The Dodo.
Week 4 of pregnancy
For example, a fertilised egg may have implanted in your womb just 2 weeks ago, but if the first day of your last period was 4 weeks ago, this means you're officially four weeks pregnant! Pregnancy normally lasts from 37 weeks to 42 weeks from the first day of your last period.
The first sign of pregnancy is usually missing a period, about 2 weeks after you've conceived. This isn't always reliable and if your periods aren't regular you might not notice you've missed one. Some women have a bit of bleeding as the egg embeds. Many women also experience tender breasts.
Put a dog bed in an out-of-the-way spot in the baby's room, and keep a container of dog treats in the room. Every once in a while, leave a few treats on your dog's bed when she's not looking. Later on, she can discover them on her own. She'll learn to love her new spot in the baby's room!
A pregnant dog doesn't typically show physical signs of pregnancy until about day 40 of pregnancy. Around this time, the belly will begin to noticeably expand, continuing to do so for around three weeks. The nipples will also enlarge and in the final week of pregnancy, they may leak milk.
While some pregnancy symptoms start very early, most of the time, you won't notice anything right away. Anything that happens immediately after having sex, like spotting, increased discharge, or feeling tired or nauseated, is usually unrelated to pregnancy.
It's too early to take a home pregnancy test in week 3. But, by the middle or later part of next week, you might be able to detect the pregnancy hormone hCG in your urine with a sensitive early test.
Your weeks of pregnancy are dated from the first day of your last period. This means that in the first 2 weeks or so, you are not actually pregnant – your body is preparing for ovulation (releasing an egg from one of your ovaries) as usual. Your "getting pregnant" timeline is: day 1: the first day of your period.
Your growing uterus is pulling and straining the muscles that support it. You may feel sharp pains or just a mild pulling sensation. It often occurs when you cough, sneeze, stand up, sit down, roll over, or during sex.
They Want to Comfort You
Dogs are highly perceptive creatures, and many can sense when their owners are feeling sad, lonely, or disappointed. If you're feeling any of these emotions, they may try to cheer you up by pawing at your hands or feet to give you extra love.
Dogs can hear, smell, and see babies, but they don't really know what a baby is, so it is shocking when dogs treat babies differently than adults. While your dog may not care much about adults, you might notice that your dog seems especially interested in babies.
They Lay Near Your Baby
Some cats are more cuddly than others, so it might be difficult to gauge how they feel about your baby when they're not one to snuggle in the first place. Dogs, however, might have a more obvious tell. Either way, if your pet is taking naps by your baby, they're probably in love.