It took days of waiting in the snow and bitter cold, but it was all worth it for these delightful photos of a polar bear cub going for a ride on its mom's behind.
She spent 13 days in the field, shooting 10,000 frames while enduring temperatures as low as -50 C with wind. On one of those days, this mom and two cubs were spotted leaving a den.
After hanging around for a few hours, the mom decided it was time to move on. "She rushed downhill in deep snow when one of the two cubs decided it was much more convenient to hitch a ride on mama’s butt."
Gilardini said it was "extremely funny and totally unexpected behavior." (Not to mention super adorable.)