On Monday night, a dog died in a plane after a United Airline flight attendant forced the dog into an overhead bin.
On Tuesday evening, a man named Brayan Castano told BuzzFeed his puppy Kokito was the dog on the flight.
United Airlines issued an apology to the passenger, saying, in part, that the dog should never have been placed in the overhead bin and "we assume full responsibility for this tragedy". She said the dog's owners-a woman, a teenage girl, and an infant-were traveling from Houston to New York's LaGuardia Airport.
"Pets should never be placed in the overhead bin", the statement added. "The woman, crying in the airplane aisle on the floor", Gremminger said. "They assured the safety of the family's pet so wearily, the mother agreed".
"I held her baby as the mother attempted to resuscitate their 10-month-old puppy", he said.
According to United's website, its policy for onboard pets is: "A pet traveling in cabin must be carried in an approved hard-sided or soft-sided kennel".
"There was some back-and-forth before finally the flight attendant convinced her to move the carrier to the bin above", Gremminger told BuzzFeed News.
The Department of Transportation lists United as having the highest rate of airline reports on incidents involving loss, injury or death of animals during air transportation. This poor family paid $125 for their pet to be murdered in front of them.
This is just the latest in a string of troubling episodes for United when it comes to transporting pets.
Six animal deaths in total were reported from the other 16 carriers included in the report.
A spokesperson for United could not say if anyone had been disciplined in relation to the incident.
In 2017, United had the highest number of animal deaths of any USA carriers, according to a Department of Transportation report, with 18 animals killed and 13 injured in transport.
But that doesn't mean that there are never tragic outcomes.
Last year, 18 animals died while being transported on United - there were six cases on all other US carriers combined, according to the Department of Transportation.
Of those 24 incidents, 18 took place on United Airlines.