They sure do grow up fast.
On Wednesday, Redditor CollegeFoodKills posted this totally adorable set of photos.
"A few weeks ago I posted a pic of my cousin with his dog sled dogs when they were puppies," CollegeFoodKills wrote. "Now they're all grow'd up!"
In the comments, a user identified the owner of the dogs' kennel as Jake Berkowitz, who placed 8th in the Iditarod earlier this month. According to the Anchorage Daily News, Berkowitz, who is from Big Lake, Alaska, won an award for outstanding dog care.
The Apex Kennels website says it is home to "60 of the happiest race driven sled dogs in the world."