While Nov. 17 was probably a regular Thursday for a lot of people, it was actually a day very close to Chris Pratt's heart. The proud family man, who welcomed son Jack in August 2012 with wife Anna Faris, posted an adorable video on Instagram on Thursday in honor of World Premature Day. In the clip, 4-year-old Jack is seen playing with a praying mantis and giggling about what to name his new friend. While Jack was less than four pounds when he was born premature, he's now a healthy and happy little boy, which is a possibility the Passengers actor wants to give other families going through the same thing. He captioned the sweet video of Jack:
"As many of you may know, our son Jack was just over 3 pounds when he was born. Thanks to scientific advances made possible by #marchofdimes funding, today he's a perfectly healthy, curious 4 year old. Today is #worldprematurityday. 15 million babies are born #prematurely each year around the world. And 1 million of them won't live to celebrate their 1st #birthday. The @marchofdimes strives for a world where every #baby has a fair chance, yet this is not the reality for many mothers and babies. Join me in supporting their efforts to give every baby a fighting chance by clicking the link in my bio. Thank you!"