The normally fearsome beast proves animals are much more intelligent than we give them credit for when it rushed over to cuddle and nudge the mum-to-be.
Brittany Smith-Osborne was visiting Potawatomi Zoo in Indiana, America, with her pals when they stopped off at the tiger enclosure.
And instantly, the tiger was drawn to 27-weeks pregnant Natasha, who was sitting down at the edge of the glass close to the enclosure, taking selfies with the animals.
The big cat began nudging the glass, with Natasha's friends commenting on how much attention she was getting.
Natasha was taking selfies outside the tiger enclosure
The inquisitive big cat came for a closer look
It seemed to know about Natasha's pregnancy
One then realised the tiger had guessed Natasha was pregnant and the mum-tobe stood up so the animal could get a proper look at her baby bump.
She climbed onto a ledge so the tiger could get a proper look at her tummy.
Instantly, the tiger began nudging her unborn baby in an adorable gesture.
One of Natasha's pals said: "I don't know whether to laughy or be scared. That is so crazy. I want to pet him."
The huge tiger sniffed around the bump before nuzzling Brittany's baby in a protective way before walking off.
The tiger rushed over to say hello
The beast had a sniff around Natasha's bump
Natasha's pal Brittany said: "We all realised the tiger was very interested in her baby bump.
"I am so excited we were there to capture that sweet moment."
Staff at the zoo shared the amazing moment the tiger nuzzled Natasha's baby bump.
A spokesman said: "This is why the zoo is here - to help make connections to nature."
It's not the first time animals have proved they have a sixth sense when it comes to pregnancy.
He then nuzzled her baby bump
Last year Alhanna Butler and husband Ricky had binned what they thought was a 'negative' pregnancy test, only to return home to find American Akita Keola had picked it out of the bin to show it was in fact 'positive'.
When the 21-year-old from Doncaster, South Yorkshire, soon fell ill during pregnancy she was sent home from hospital after being told her back pain was just due to her small frame.
However Alhanna claims Keola knew that something was seriously wrong as she would not stop crying and staring at her, just like Hatchi from the movie.
After sharing a photograph on social media of Keola staring intently at her for almost an hour, Alhanna's mum Amanda rang her to say the dog was telling her something was wrong.
However when the mum-to-be arrived at hospital, she collapsed and almost died.
Alhanna was hospitalised in intensive care with an antibiotic-resistant bug and a double kidney infection and doctors said she would have died had she not come in when she did.
A video 'thank you' tribute to Keola for saving Alhanna and 13-week-old baby Lincoln went viral on social media and has amassed more than 4.5million views.