"It ain't my zoo really, Arabel, you know. I'm just the head warden, and your aunt Effie runs the cafeteria," said Uncle Urk. "The zoo belongs to Lord Donisthorpe." "Does he have lions and tigers?" "No, he hasn't got any of those. He likes grass-eating animals mostly—wildebeests and zebras and giraffes. And birds and snakes. And he's got porcupines and a hippopotamus and a baby elephant. I expect you'll enjoy giving the baby elephant doughnuts." "I thought they liked buns best?" said Arabel. "Lord Donisthorpe has invented a doughnut-making machine," said her uncle. "It uses whole wheat flour and sunflower oil and honey, so the doughnuts it makes are very good for the animals. And so they blooming well oughter be at thirty pence apiece," he muttered to himself. "Cor! Did you ever? Six bob for a perishing doughnut!" His truck at that moment passed between the gates in a high wire-mesh fence. Arabel noticed a sign that said CAUTION, ZEBRA CROSSING. Ahead of them lay a ruined-looking castle, inside a moat, and a lot of wooden and stone buildings and haystacks.