Cousin was moving his cows and calves to a new pasture when one of the cows tried to cross alone.
"I knew she had a calf and I went to look for it," Cousin said. "I was like, 'What, two?' I'm 62 years-old and this is the first set of twins I've seen."
The twins were born May 25.
Veterinarian Dr. Jim Boyer said the incidence of twin calves runs about one in 400, but gets more common in Jersey cows. The calves are the product of an Angus bull and an Angus/Jersey cow.
"That could get you in," Boyer said.
Boyer also said the cow's maternal instinct sometimes causes them to care more for one calf than the other.
"They forget about one when they go to another," Boyer said. But Cousin's cow had both calves staying together and was tending them well as a pair.
"She'll low one way and they'll come and she'll low another way and they'll stay," Cousin said.
Cousin kept the cow and both calves separate from the rest of the herd to help them get a good start.
"I didn't want them to run with the rest of the herd just yet," Cousin said. "I don't want to move them until they're good and stable."
The Cousin's farm has 84 head of cattle and now a new pair of twins will join them.