A proud mum-to-be has posted an incredible picture of her ultrasound scan that looks uncannily like a rabbit.

The shocked woman from Florida in the US shared the bizarre picture showing the profile of a tiny rabbit-shaped foetus - with little bunny ears sticking up and four legs - on social media.

Underneath, she wrote: "Went for my first ultrasound today… turns out I'm having a bunny."

The expectant mum posted the picture onto reddit under the user name NetteFraulein.

The 33-year-old, who does not want to be named, said: "I thought it was funny.

"I was nervous because we have lost two in the past so I was relieved when I saw the heart beat at 163 ( indicating a healthy heart rate).

"Then we noticed it was a bunny and had a good laugh about it.

"This was the seven week ultrasound so the baby is due in April about a week before Christmas."

One user quipped: 'You do realise the expression 'At it like rabbits' is not supposed to be taken literally.''