When the large orangutan at Colchester Zoo in England approached the pregnant woman, Kayley Bettany had no idea what to expect (video below).
She was probably shocked, then, when the huge animal decided to gently caress her baby bump from behind the glass window. She then tries to listen to it and kisses it.
"The Colchester zoo orangutan kissing and touching my bump absolutely love this, he loves our brookie," writes Bettany on her Facebook. "Feel free to share these are amazing animals."
In the heartwarming video uploaded by her husband, Kieran, one can watch the orangutan sit and stare at the mother's very large bump as if contemplating it.
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He studies Kayley's belly closely, his nose nearly touching the window between the two.
Suddenly, the orangutan takes a step back before extending his hand toward her bump.
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"It's amazing," a male voice in the background can be heard remarking.
But the creature was not done observing yet. The emotional orangutan repositions his head so his ear is next to Kayley's belly.
"He's listening!" the man exclaims. Then the orangutan kisses her belly through the window as everybody laughs with surprise and delight.
The captured moment touched people worldwide.
"I love how beautiful nature can be," wrote one Facebook user on Kayley's page. "Animals are so more in touch [than] most people give them credit for."
Others had mixed reactions.
"And yet we stick them behind a sheet of glass to look at them, knowing how intelligent they are," wrote one individual on the Little Things Facebook page. "[While] it is a beautiful moment seeing the reaction of this stunning animal it is also so very sad."
Although some agreed zoos were unethical, they saw opportunity in the orangutan's public visibility.
"Even though we’re not a huge fan of zoos, it should be noted that this beautiful animal is working as an ambassador to help spread awareness to people who visit him to let them know how important his species is," writes Paul Morris for Little Things. "Along with the important research he provides, he’s never forced to do tricks and he’s always given a healthy diet."