A newborn has gone viral for appearing to defy every parenting manual ever written, walking just minutes after coming into the world.
The baby, born in a Brazilian hospital, can be seen jogging on the spot while being held up by the arm of a midwife who is totally incredulous at its walking ability.
In Portuguese, the woman can be heard explaining that she has been trying to wash the baby but that it keeps hopping up and attempting to walk - just 20 minutes after exiting the womb.
As the newborn is held up by the midwife, it begins to move forward with its legs. The nurse explained that the baby had already trotted an impressive distance.
The video was posted on social media on Saturday (NZ time), and has already received more than 50 million views.
But the video actually displays a perfectly normal reflex, called stepping, which babies are born with.
It's not known why the midwife in the video was so incredulous.
Newborn babies usually start to walk nine to 12 months into their life, with some taking several months longer. Crawling and saying their first words typically come before then.