Vets told him the rescue puppy wouldn't live long, so he started filming her once every day.

It's hard not to be charmed by little Pegasus, a frail, snow white puppy rescued by YouTuber Dave Meinert. In the video's description, Dave writes, "When I rescued Pegasus, I was told she wouldn't live too long so I set about filming her every day..."

Dave's video details how he was told Pegasus had little chance of survival and that her quality of life would deteriorate rapidly. In the first few seconds, though, you can tell how charmed Dave is by the rambunctious pooch.

This heartwarming love letter to Pegasus has made many curious about her. Dave, unfortunately, had to give her to another home where she has a doggy friend.

Sources: YouTube