You need to use the £1 off dvd link - posted by garyrip - it works ok in Internet Explorer. Click the link and then search for the title. You may have to remove cookies but it does work 100%.
Howard and Vince, two workers in a run-down zoo, are often called upon to put their jobs before their pride. That means dressing up as animals and sitting in cages because their boss can't afford any real animals. But their jobs involve much more than just dressing up. From battling mutant animals engineered in a secret laboratory underneath the zoo, to fighting a kangaroo to raise money for their dilapidated workplace, Howard and Vince always find themselves at the centre of some very strange events.