In Australia Dr Dario takes on a herd of pregnant cows and takes his student through the steps of dealing with the rather smelly procedure, while in the UK animal helper Roger Palmer introduces his unusual group of pets -- 5 great wolves, a species that has been extinct from the British countryside for 200 years. Ever wanted to take a pet on holiday , this week's How To has a plan and in animal world, Borneo's orang-utans face a brighter future because of a rehabilitation centre in the middle of the jungle.