Sometimes, it takes a highly skilled breastfeeding mum [1] to recognise one of the telltale signs of a hungry baby. There's a subtle lip smack, perhaps a tugging at their ears, or even a sharp squeal. Other times, however, the clues are a bit more obvious.

For instance, when 5-month-old baby Mila got hold of a naked Barbie doll, I don't think anyone was unclear that this little girl was hungry.

"I was tending to my twins, making sure they were ready for bed, and Mila picked up Marley's Barbie doll and decided to check to see if Barbie has milk," mom Chanel McNeil wrote [2] on YouTube, joking that it was her infant's first DIY [3] tutorial on breastfeeding. "The cutest thing ever."