ABC News' Micah Grimes reports:

One of the puppies that Olympic silver medalist skier Gus Kenworthy adopted while in Sochi for the Winter Olympics has died, his representative confirmed today. "Sochi," a female stray, died while Kenworthy's friend, Robin Macdonald, was trying to get the adopted puppies back to the United States for proper treatment, Kenworthy spokesman Michael Spencer said.

No words can explain what has happened here, good bye little guy, we will miss you. ???? Heading home on Tuesday. pic.twitter.com/uAm8Naj2E0

- Robin Macdonald (@robindmacdonald) March 9, 2014

In winning a silver medal and sharing the four puppies he saved from the streets of Sochi with the world on social media, Kenworthy became a household name during the Olympics.

Oh my glob, look who I just found! :) #sochistrays pic.twitter.com/ne66y7jN6Z

- Gus Kenworthy (@guskenworthy) February 11, 2014

puppy love is real to puppies. pic.twitter.com/krauCUPjOg

- Gus Kenworthy (@guskenworthy) February 11, 2014

Fell asleep last night with Rosa :) Thanks for the pic @robindmacdonald! pic.twitter.com/4s6kDRJXxT

- Gus Kenworthy (@guskenworthy) February 19, 2014

Spencer said Macdonald and the surviving dogs are "in transit" back to the U.S. and are expected to arrive in Denver sometime this week.

Ahhh I'm so excited!!! ? RT @robindmacdonald: One last family nap before the big move to a new life. Bye @Sochi2014! pic.twitter.com/8keCl9eHQW

- Gus Kenworthy (@guskenworthy) March 11, 2014