Yes, female dogs (and males too!) can often sense a human pregnancy, not by "knowing" a baby is coming, but by detecting subtle changes in your scent (hormones like hCG), body language (posture, balance), routine, and even hearing (fetal heartbeat or gastrointestinal sounds). They might become more attentive, protective, affectionate, or anxious as a result, acting like a "Velcro dog," even before you're aware of the pregnancy yourself.
“Many people report that their dogs are more affectionate and/or protective during their pregnancies,” says Barrack. “Presumably, these behavioral changes are due to changes in a pregnant owner's mood coupled with hormonal and scent changes.”
The Clingy Dog
Dogs detect human pregnancy through a combination of sensory cues, learning, and social attunement. They do not ``magically'' know pregnancy; rather they pick up consistent changes in scent, behavior, physiology, and routine that reliably signal the condition.
It's common for dogs to go on alert and become overprotective of their expecting owner from the very beginning of her pregnancy. Behaviorists have witnessed dogs growl, bark, or even block doors with their bodies to prevent other family members - even the baby's father - from coming into the same room as the mom-to-be.
As she explains, there is not an exact known time when dogs have been proven to perceive hormone-related changes in human pregnancy; however, there are significant hormonal changes that begin the second week after fertilization.
Some pregnancy symptoms for a dog include: Lethargy and decreased activity. Changes in appetite. Changes in behavior.
There's a reason dogs might seem more inseparable from their pregnant owners, as the parents-to-be get further along in their pregnancies. Not only do pups notice growing baby bumps, but some experts believe dogs can pick up on a change in scent from expectant mothers, according to the American Kennel Club.
According to Dr. Ostermeier, “There really is no specific indication with scientific proof to say if a dog is 'sensing' a pregnancy.” Some dogs might start acting differently when you're expecting. But since our dogs can't explain themselves to us, we can only observe that behavior and make educated guesses.
When a woman becomes pregnant, her hormones surge, which may change her unique personal scent. Additionally, as her body changes—and her movement changes as a result—dogs can pick up on those changes and they may react to them.
"Pets, particularly dogs and cats, have highly developed olfactory senses that allow them to detect subtle hormonal changes in humans, including those associated with pregnancy," says Susan NilsonOpens a new window, a cat and dog training and behavior specialist and the owner and founder of The Cat and Dog House, which ...
Any sudden behavioral change, like increased clinginess, can be an indicator of health problems. Pain, discomfort, or feeling unwell can lead your dog to seek comfort from her trusted human. Conditions like arthritis, infections, or even internal issues may not be immediately apparent.
During the first trimester, avoid alcohol, smoking, and illicit drugs; limit caffeine and high-mercury fish; skip raw/undercooked meats/eggs, unpasteurized dairy, deli meats, and sprouts; avoid overheating (hot tubs, saunas); don't clean cat litter; and consult your doctor about medications and strenuous activities, as this is a critical time for fetal development.
Introduce Your Dog to Baby Sights, Sounds and Smells
Let her investigate them, but if she picks them up, immediately redirect her attention to one of her own toys or chew bones. (Keep in mind that it might be difficult for your dog to tell the difference between her things and the baby's!
Dogs can smell changes in our hormones: if their owner is pregnant or has a miscarriage, they will know something is up. It may affect their behavior.
Increased affection for — and protection of — the pregnant woman. Agitation, growling, barking and/or being uncooperative.
"Dogs have an absolutely incredible sense of smell," she said, so it's not out of the realm of possibility that with the hormone changes caused by pregnancy, a canine might be able to sniff out the condition.
You might find they want to be by your side more, or a bit less. They might seem anxious or quiet. Or you might not notice much difference in how they behave. You can use this time to help your dog adjust to having a baby in the household.
Dogs say "I love you" through actions like leaning on you, making soft eye contact (releasing oxytocin), following you around, bringing you toys, licking, gentle tail wags, and cuddling, all signs of trust, affection, and bonding that show they feel safe and happy in your presence.
They might sniff around it, lick it, or paw at it when they sense the changes in your womb. Most of the time, these behaviors are temporary.
They Want to Feel Safe
If your dog isn't feeling protective, it's also possible that they lie on you because they are hoping you will protect them! Anxious or nervous dogs may view their owners as a source of security and safety. If that describes your dog, they may be lying on your stomach to feel safer.
We can't know for sure the exact moment a dog senses a pregnancy. However, we do know that not much gets by the canine nose. Although your dog can detect a change in scent, it's unlikely they comprehend the reason for the change.
Dogs may be able to hear a baby in the womb as early as the 28th week of pregnancy, when babies start to make faint noises.
Older dogs with vision or hearing loss, or those experiencing cognitive decline, can suddenly become clingy because their world is becoming unfamiliar to them. Dogs who are ill or bored can also become clingy. Talk to your vet to understand what might be causing the sudden clingy behavior.