The US owner of a French bulldog named Darcy has penned an open letter to airline JetBlue for saving her life.
Michelle Burt placed an oxygen mask over her dog's face when she was struggling to breathe, with assistance from two flight attendants she said were named Renaud Spencer and Diane Asher.
The action worked and little Darcy was saved, with Ms Burt saying she'd take her to the vet after the Florida to Massachusetts flight had landed.
"In a time when the news cycle is so negative and divisive it helps to be reminded that good people are doing good things on a daily basis even if it is in small ways or big ways like yesterday when I believe the attendants on Jetblue flight 330 probably saved my French bulldog Darcy's life," Ms Burt says in a letter posted on Facebook.
"I noticed that [Darcy's] tongue was blue and I am aware that is a sign of insufficient oxygen (Hypoxia) so I pulled her out from under the seat and placed her on my lap to cool down and help her relax as she was panicking and breathing frantically.
"The fact that the attendants were responsive and attentive to the situation may have saved Darcy's life
"I placed the [oxygen] mask over her face, and within a few minutes she became alert and after a short time she didn't want the mask. I believe Renaud and Diane saved a life, some may reduce the value of the life because Darcy is a canine, I do not.
JetBlue released a statement to ABC News about the incident, confirming Ms Burt's story.
"We all want to make sure everyone has a safe and comfortable flight, including those with four legs," the airline told ABC News.
French bulldogs are classified as short-nosed dogs, which are more vulnerable to respiratory problems. Some airlines don't allow them to travel in cargo holds because of the greater risk of breathing issues they face.