The dog, named Lola, wandered away while Debra Mejeur and her husband were visiting Elk Grove Village in October 2017.
Now years later, a couple in Glendale Heights caught Lola after they spotted the dog in their neighborhood.
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They took her to DuPage County Animal Services and thanks to a microchip, she is now back home with her family after all these years.
She was a little reserved at first, but Lola quickly recognized her family.
"I completely lost it," Debra described. "I went into an emotional whirlwind. I just, I thought I was in a dream."
Lola was trained to help Mejeur as a seizure response dog.