They noticed that the exhausted father-to-be, now nicknamed Randy, had lost a little weight, but did not realise why until they discovered he was actually a male rodent being kept busy in the wrong pen.
"We don't know how long Randy was in the female enclosure but it could have been several weeks which would have given him time to go round the entire female population.
"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."
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