Staff at Hatton Country World couldn't figure out how the females had gotten pregnant -- until they discovered the male rodent.
"One of our male guinea pigs managed to find his way into the female enclosure and had a very good time by the looks of it," said park manager Richard Craddock. "We suspect a child may have placed him back in the wrong pen by accident after stroking him or Randy may have somehow broken out of his enclosure to get to the females."
The park is now prepping for about 400 new guinea pigs. The babies will join a population that already includes 300 male and female guinea pigs, ITV reported.
"We believe that the newly-named Randy could have impregnated up to 100 female guinea pigs, which have litters of about four, so if you do the math we could be expecting quite a baby boom," Craddock said.
In order to account for the expected population increase, the park is going to expand its guinea pig farm.
"Staff did comment he looked a little thinner than before. He has now re-joined his male friends, clearly he's got a lot of bragging to do," Craddock said.