If she had been left in the dumpster for another hour longer, she may have died, Audra Houghton, field operations supervisor for San Antonio Animal Care Services (ACS), told local news outlet KSAT 12.
Suffering from heat stroke, the yellow Lab didn't have the energy to move. She could only find comfort from the elements under piles of garbage and boxes of pizza, according to her Facebook page.
But someone saw her lying there, abandoned and alone, covered in flies and maggot eggs - and immediately took her to get help. ACS labeled Millie's case as a "horrifying discovery."
"We don't know how long she had been in there before that call came in," Matt Llewellyn, ACS Clinic Manager, told told KSAT 12.