With Christmas approaching, the keepers at Chester hope to include the animals in the festivities, but some of the animals aren't getting into the Christmas spirit. Christmas stockings filled with treats have been hung up for the Sumatran orangutan family, but eight-year-old Indah decides to open everyone's stocking for them. Sun bear couple Toni and Millie have been together for three years, but their relationship seems to have come off the rails. Can a trial separation make the heart grow fonder? While many of the animals are getting edible Christmas treats, reticulated python Bali has been off her food for over three months and there's growing concern for her welfare. She needs a health check but she's 23 feet long and weighs almost 80 kilos, so ten brave keepers are needed to catch her, in order to get to the bottom of her eating disorder.