The tiny southern long-nosed potoroo, a nocturnal marsupial from south-eastern Australia, is thought to be around three months old. Arun Selby, primates and small mammals keeper at Marwell, said: "We’re so excited, this is our first ever potoroo baby. "We're unsure of its gender because we haven't seen it much yet, apart from jumping out to join in at feeds. (Image: Jo Kedward)The joey can be seen during the October half-term as Marwell Zoo invites visitors to join in its Wild Autumn event. By visiting Marwell, you are contributing to the crucial conservation projects here in the United Kingdom and worldwide.