The triplet calves born on the Christopher farm near Letcher, SD, are truly a once-in-a-lifetime occurrence .
So excuse John Christopher if he couldn't believe his fortune when he found three healthy calves  in a pen last weekend.
“I was just in shock. I just couldn't believe it," Christopher said. "It's something that we're still wrapping our heads around. I mean what are the odds?"
Russ Daly, South Dakota State University (SDSU) Extension veterinarian in Brookings, says the number most often associated with a cow  having triplet  calves comes from a 1920 study that says it is a 1 in 105,000 chance.
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