Dr. Spencer played the wisecracking Dee Thomas on the 1970s sitcom “What’s Happening!!” and became a veterinarian later in life.

The former child actress, who later pursued a career in veterinary care, experienced a number of medical complications in recent years

Pelt watched Spencer, 60, take her last breath. “August 11, 2025 will forever be a reminder of the day that I lost a big part of myself,” he said. “After many years, my big sister, Dr. Danielle Louise Spencer lost her battle with cancer.