BROOKLYN PARK, Minn. -- TaterTot, a 10-month-old pit bull, was with his foster family for less than a week when he changed their lives forever.
TaterTot's owner, Christi Smith, of Brooklyn Park, Minn., told Good Morning America (GMA) that everything was normal the night of Oct. 2 when she put her son, Peyton Anderson, to bed.
During the night, Peyton woke up to get a glass of water and TaterTot began acting strangely, Smith says.
"TaterTot was whining and barking," Smith, 28, told Goodmorningamerica.com. "I didn't think anything of it and just tried to get everyone to go back to bed."
Around 1 a.m. that same night, Smith was awoken again, this time by TaterTot, who was running between Smith's and Peyton's bedrooms and barking, according to GMA.
"I got up and went to check on my son and TaterTot was on the bed, trying to shake his bed, wake him up and lick his face," Smith said. "At that point my son was barely breathing."
Peyton drove her son to the emergency room where he was diagnosed with low blood sugar.
Doctors told GMA they have not been able to determine what caused Peyton's sugar to drop so low, but say the dog detected Peyton's ketones, a sign the body is burning fat for energy instead of using glucose.
Smith originally agreed just to foster TaterTot because he had spent more than a month in and out of foster homes in Minneapolis. Now he is a permanent member of their family, according to GMA.
TaterTot and Peyton are now "pretty much inseparable."