Credit: Flynet UK/FameFlynet Pictures

Kate Middleton can keep up with the best of 'em -- including her furry four-legged friends!

The 29-year-old royal spent New Year's Eve at her parents' place in Bucklebury, England, where Middleton -- clad in $465 leather-lined Le Chameau rain boots -- chased after a golden retriever and a small black puppy. See more pics of Kate playing with puppies from PopSugar.

Later that evening, the Duchess of Cambridge rang in 2012 with the help of her party planner sister Pippa, 28. The single-again British socialite rented a teepee-style "kata" for the celebration, which featured a dance floor and seating for 100 guests.

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An onlooker tells The U.K.'s Daily Mail that Middleton and her 29-year-old husband Prince William were laughing throughout they night. "They looked full of the joys of the season."