A sheep found wandering central Wellington after Saturday night's quarterfinals has police mystified.



Police have praised the behaviour of Rugby World Cup fans over the capital's biggest weekend ever, but as the crowds cleared Courtenay Pl one woolly reveller was separated from the flock.



Inspector Simon Perry said police were called to Te Aro Park on Manners St about midnight on Saturday "where there were reports of a lone sheep in the area".



Police managed to calm the sheep before the Wellington City Council's Animal Control arrived to assist.



"It's unknown as to how the sheep came to be in the central city," Mr Perry said.



There were 45 arrests on Saturday night but only two on Sunday night - one for breach of the peace and another for disorderly behaviour.



"Everyone was really well behaved, at the game and in town afterwards."

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