Sharon Reagle said she was planting hostas at the Saegertown home of her mother, Betty Wood, Sunday when she came across a jar containing preserving fluid and a tied-closed bag, the Meadville (Pa.) Tribune reported Tuesday.
Reagle said she took the object inside and opened the bag, revealing the two-headed piglet inside.
"It was unique; pretty neat really," Reagle said. "It didn't bother me at all."
"My parents lived there for 56 years and never raised pigs," Reagle said of the jar's unknown origins.
Reagle donated the strange specimen to Allegheny College.
"This is like Christmas for a biologist. The students will love it," said Lisa Whitenack, assistant professor of biology at the school.