Dog owners Whitney and Brook Michael Lovatt were inside their Stuart, Fla., home with Whitney's sister, Amy Kelaidis, when they heard Tyson barking outside near the pool, the South Florida Sun-Sentinel reported Wednesday.
After following Tyson's persistent barking, Brook reportedly found Kelaidis' 10-month-old son, Lios, floating face down in the pool with blue lips and closed eyes.
Lovatt, a licensed boat captain, performed rescue breathing on the child. He was breathing independently when paramedics arrived and was released from Martin Memorial North Medical Center Tuesday.
"I think there's a sequence of events you just can't explain. It definitely is God's work for sure. They were calling him 'The Miracle Baby' at the hospital," Kelaidis said.