Chris Pratt "prayed" his son would survive.
The 'Guardians of the Galaxy' star - who has two-year-old Jack with Anna Faris - admitted that he feared the worst when his son was born nine weeks premature.
He said: "He was three pounds, 12 ounces. Anna got to hold him for a moment and then it was off to the NICU - the neonatal intensive care unit ...
"He had jaundice, so they put a blindfold on him and he slept beneath [a] creepy light and he had a PICC line, which is an IV that runs up his arm into his heart. He had a feeding tube and just wires in and out, and he lived in that incubator. That was his first crib."
The 35-year-old actor - who was warned by doctors that Jack may have special needs and need surgery to correct his sight - explained how much "love" he felt for his child.
Speaking to reporters at a charity event, Us Weekly details Chris as saying: "The only people allowed to touch him were his mom and me, unless you were wearing gloves.
"We did this amazing thing they call 'skin-to-skin' -- it was just the best feeling I ever had. It's just what it sounds like.
"My little boy was laying across my neck and chest feeling my heartbeat and feeling my love, and I played him country music and I sang to him and I made him promises... in that moment... you know, about... just about what kind of dad I wanted to be, and I just prayed that he'd be here long enough and he was going to let me keep him."

Kris Jenner has themed Christmas celebrations.
The 59-year-old businesswoman - who will spend the holidays with her six children - is looking forward to keeping up with the usual traditions.
She said: "Every year, we try to have a theme. And a very important element to any time I give a party of any kind is a party favour ...
"I want the traditional Christmas/Thanksgiving dinner. Turkey, stuffing, gravy, sweet potato, soufflé that I'll make. I love to do the desserts so I want to pass that down to my kids and have them incorporate that into their family and their traditions when I'm long gone."
The 'Keeping Up With The Kardashians' star has enlisted the help of celebrity florist, Jeff Leatham.
She said: "Jeff Leatham is truly one of the most creative people I have ever met in my life.
"So when I started thinking about Christmas, he was my first call."
Walking around the house with him to discuss their decorating plans, Kris revealed some of her other traditions.
Speaking on 'Oprah: Where Are They Now?', she shared: "We always have gifts under the tree. I would love it if when we come up with a theme, you help me with wrapping paper because I would love for it all to be so seamless and beautiful.
"Make the kitchen really Christmassy ... I love to bake at Christmas time so this needs to smell like gingerbread.
"This is the bar; it's definitely the hang out for the holidays."
Kris also instructed Jeff to help her four eldest daughters to decorate their own homes.
She said: "I also want you to talk to the girls about doing something at their house."

Kanye West speaks to his daughter every day.
The 'Stronger' hitmaker - who has 17-month-old North West with his wife Kim Kardashian West - loves to hear his child's voice when he's touring all over the world.
A source said: "There's not one day that goes by where Kanye's not calling the house and talking to Nori on the phone.
"Just hearing his precious baby speak makes his day."
The 36-year-old rapper - whose last world tour saw him perform over 50 shows in two continents - also requests that Kim and North's grandmother, Kris Jenner, sends him photographs of his little one.
The source continued to HollywoodLife.com: "Kanye loves Nori more than life itself and for anyone to say he's a bad dad or an absent father is crazy."
Meanwhile, Kanye has reportedly requested his daughter has a personal chef and a £8,000 bed for his next tour.
A source shared: "North will have her own chef, who will prepare bespoke baby meals, including butternut squash risotto, minty lamb koftas and chicken and apple balls.
"Her organic milk will be served in a Tiffany sterling silver child's cup with a Tiffany monkey straw and Kanye's requested platters of organic berries - no expense will be spared."

Kate Hudson has split from Matthew Bellamy.
The 'Bride Wars' actress - who has three-year-old Bingham with the Muse frontman - has called off their engagement but are still "close friends".
Her representative told PEOPLE.com: "Kate and Matt have been separated for some time now.
"Despite this, they remain very close friends and committed co-parents."
The pair had been engaged since April 2011, something which Kate - who has Ryder, 10 from her previous marriage to Chris Robinson - didn't mind.
She previously shared: "My parents aren't married. And one of the reasons why they never got married is because they had been married before and they liked it the way it was.
"They didn't feel like they needed a piece of paper to be committed. So for me, I know that marriage is not a golden ticket."
Recently, Kate admitted that the couple were "basically married" and in no rush to plan a wedding.
She said: "I'm not in a rush. We are basically married. It's really about when are we going to take the time to plan a wedding.
"[I'm not wearing my engagement ring] because it can be...a little much. I like to wear my push gift [another ring] for pushing out Bing."

Jennifer Aniston started to become her 'Cake' character.
The 45-year-old actress - who plays a woman with chronic pain in the drama film - has revealed how she adopted some of the characteristics of Claire Simmons herself.
She said: "There would be times when I would have to do a take over because I knew I moved too easily.
"But what's odd is that after about two weeks of walking and taking on a physical state, that starts to become sort of your natural state of being and moving."
The 'Friends' star also admitted that she felt empathetic towards the character and her struggles.
Speaking in Epix's 'Hollywood Sessions', as obtained by the Huffington Post, Jennifer said: "I felt a lot of empathy for her struggle, and I think she is beautiful.
"Her problems and her choices and her journey is beautiful. We feel empathy for people going through pain."
Meanwhile, Jennifer has revealed that she is "flattered" by the Oscar buzz that she is receiving for her role in 'Cake'.
Speaking about the role, she said recently: "It ticked all the boxes that an actor dreams of.
"It was just a wonderfully beautiful story of a woman in extraordinary pain, living through an unthinkable trauma.
"I also found her quite humorous and quite endearing."

Nick Cannon will "forever be family" with Mariah Carey.
The 34-year-old actor - who recently separated from the 'When You Believe' hitmaker - has revealed that the pair will always make their children, 3-year-old twins Moroccan and Monroe, their "priority".
Speaking on 'Good Morning America', he explained: "Always focus on family. We'll forever be family.
"At the same time, we're there for our children, making them the No. 1 priority and understanding they're loved and can have an amazing holiday."
His comments come only days after sources revealed that the couple's split is getting contentious, with the pair "arguing over property and custody of the twins".
A source revealed: "I think they're trying to work all these details out on property and the kids before it gets filed. They communicate because of the kids.
"She's trying to keep it together. She's focused on caring for her children and her upcoming five sold-out Christmas engagements in New York."
Meanwhile, the 'America's Got Talent' presenter recently defended his decision to be open about his marriage breakdown.
He said: "That was a lot of people's advice, 'Lay low.' Being a public figure, of course you don't ever want to deal with your personal life in the public, but I'm the type of dude I deal with everything head-on.
"I'm not a hider, I never hold punches, hold my tongue. I'm as candid as I can possibly be, but I try and be as respectful, as classy and the best human being I possibly can be."

Hailey Baldwin has denied she is dating Justin Bieber.
The 18-year-old model was rumoured to have been growing close to the 'Baby' hitmaker but she has admitted that they're just "good friends".
She told E! News: "I've known him since I was so young - since I was like 13 - and we've just been good friends over the years.
"We have just stayed close and there's nothing more to it than that."
Meanwhile, a source recently revealed that the 20-year-old singer has found a new "muse" in Hailey.
The insider shared: "She's different from the other girls Justin has been with. She's really fun, feisty, and couldn't care less about Justin's fame and fortune."
Hailey - who only celebrated her birthday a few weeks ago - was reportedly "treated like a princess" by Justin on her special day, despite him only splitting from on/off girlfriend, Selena Gomez, just recently.
The source continued: "Hailey's birthday was on November 22 so when she got to New York, Justin made sure to spoil her and treat her like a princess. He totally took care of her and took her shopping. He's definitely on the rebound from Selena."
Despite his advances, Hailey - the niece of actor Alec Baldwin - is believed to be "cautious" about her supposed romance with the star.
An insider explained: "Justin usually gets what he wants and he's trying to seal the deal with Hailey. But she's being a bit cautious.
"Hailey doesn't want to just be another girl on Justin's list. Right now, she's treating this relationship as a friendship."

Swizz Beatz thinks his children give him "purpose".
The 36-year-old rapper - who is expecting his second child with Alicia Keys - has admitted that he loves to "give back" to his kids.
He said: "I am very excited about having another child.
"I now have a bigger purpose in life, I love giving back to my children."
Swizz - who has 4-year-old Daoud with the 'Girl on Fire' hitmaker as well as Prince Nasir, 14, Kasseem Jr., 7, and Nicole, 6, from previous relationships - has revealed that his kids have "changed" who he is as a person.
He said: "When you grow up, you really don't comprehend a lot of things about life ...
"My baby and all of my kids are life itself. They have changed me and are angels to the world."
Meanwhile, the 'Money in the Bank' hitmaker praised his "beautiful" wife, explaining what an amazing mother she is.
He told PEOPLE.com: "Alicia is an amazing one-on-one mom, and I have spent the last few months making her as comfortable as possible during her pregnancy.
"I have never met a human being like her. She is gifted, beautiful and wonderful. Having children together has greatly enriched our marriage. We are both thrilled about the new baby. It's a blessing."

Nicole Kidman has opened up about her "really hard" year.
The 'Paddington' star - whose father, Dr Antony Kidman, died suddenly of a heart attack in August - admitted that the "massive tragedy" had a big effect on her.
She said: "Personally [it's been] really really really hard. My family underwent a massive tragedy. So not my favourite year.
"But I try not to be ungrateful - I'm grateful to be alive."
The 47-year-old actress also revealed she would be spending more time at home in Sydney, Australia with her family.
She shared to the Australian version of The Guardian newspaper: "We've gone through a really tough time this year as a family.
"It's so nice to be able to take care of each other."
Previously, Nicole revealed that she saw lots of similarities between her late father and her husband, Keith Urban.
She recently said: "I lost my father, which is a devastating thing for my family and myself right now.
"Keith and my dad - good men. Choosing to protect his family and take care of himself, but take care of his daughters, and walk the walk, if that makes sense, not just talk the talk ...
"I'm lucky to have a rock of a husband and a strong faith. I have both those things."

Halle Berry reportedly ordered for her daughter's hair to be forensically tested.
The 'Extant' actress - who is in the middle of a bitter divorce from Gabriel Aubry - has accused her former partner of bleaching their child's hair.
According to gossip website TMZ, Halle had strands of hair from 6-year-old Nahla's hairbrush sent off to Microtrace, a forensic consulting laboratory.
Papers submitted to the court by the 48-year-old actress reportedly state that the company concluded that the hair had "extensive damage ... [which is] likely the cumulative effect of repeated exposure to numerous gentle bleaching treatments".
Gabriel denied that he was straightening and lightening her hair using chemicals and defended the lighter colour, insisting it was just from spending time in the sun.
The judge is believed to have ruled that neither of Nahla's parents were allowed to change her hair.
Meanwhile, a recent report alleges that Halle wants to have her child support payments cut by 80 per cent.
A court previously ordered her to pay $16,000 a month, a figure which she wants reducing to just $3,000, because she claims Gabriel is just living entirely off the money he receives from her.
Documents submitted to the court by Halle state that the model is "perfectly capable" of getting a job and that the reduced payments will still make sure Nahla can live comfortably, if supplemented by his own wages.

Karrueche Tran thinks Chris Brown is "immature".
The 26-year-old model - who recently split from the 'Loyal' hitmaker - was branded a cheater by her on/off boyfriend, who accused her of dating Drake whilst Chris was in jail.
A source said: "Karrueche's not a cheater, a heartbreaker or a liar.
"She thinks Chris is being really immature and trying to make her feel awful and basically destroy her character by saying she hooked up with Drake."
The insider also explained that there is no truth to Chris' claims or he wouldn't have acted so friendly with the 'Hold On, We're Going Home' hitmaker.
The source continued to HollywoodLife.com: "If he really thought that, he wouldn't have done the ESPYs with him, he wouldn't have done interviews praising him, and he certainly wouldn't have been with Kae when he was released from prison.
"He's on one right now and Karrueche's glad she doesn't have to be in his face right now as he has yet another one of his out of nowhere tantrums."
Meanwhile, the 25-year-old singer recently apologised to his ex for "airing out" their personal life on social media.
He wrote: "Being young and dumb is one of my strong suits and emotional at best. I love hard and react impulsively when I'm hurt at times. I don't think social media is a place to air out or hash out personal problems and a n***a feel hella WACK for doing it.
"So I AM APOLOGIZING I live in a glass house and the same s**t that makes me great also is my curse. Everybody know I love that girl. I don't care how my image my look to the public because I'm still gonna be the best at what I do. I just want baby girl to know I apologize!(sic)".

Kris Jenner is dreading the day all her children leave home.
The 'Keeping Up With The Kardashians' star - who has 34-year-old Kim Kardashian West, Khloé Kardashian, 30, Kourtney Kardashian, 35 and 27-year-old Rob Kardashian with her ex-husband Robert Kardashian and Kendall Jenner, 19, and Kylie Jenner with her former partner Bruce Jenner - is not looking forward to when her youngest, Kylie, moves out for good.
Trying to contain her emotions, she said: "One day, I know that I'll look around and they'll all be gone. It's so fast."
Kris also admitted that it'll be "weird" for her once the 17-year-old television personality leaves the house.
The 59-year-old businesswoman and manager said: "[Kylie] keeps reminding me daily that she's 17 and there's only a few months left until she's 18.
"I ignore her because that's going to be weird and hard."
Meanwhile, Kris revealed that because all of her adult daughters have bought houses this year, it has made hers feel like an "empty nest".
She told 'Oprah: Where Are They Now': "Khloé bought a house this year, and Kourtney bought a house this year, and Kendall bought a house this year, and Kim bought a new house this year. I do feel a little bit like it's an empty nest."