When filmmaker Dave Meinert rescued a sick four-week old Great Dane puppy named Pegasus from an careless breeder, he wasn’t expecting her to live very long. After all, it had a pigment deficiency defect that leads to deafness and blindness, and most of its siblings were either dead or deformed. Meinert decided he would care for Pegasus the best he could and document her life every day for as long as she lived.

The short video above is a time-lapse showing Pegasus growing from a puppy into adulthood while doing her daily exercises on a treadmill with a camera mounted nearby. Many months into the project, Pegasus is still alive and well. “I still don’t know how long she is going to live, but right now is pretty great,” Meinert says.

(via Dave Meinert via Co.Create)