One day, Kitty looked at their calendar. ‘Doggo!’ said Kitty. ‘According to the calendar, today is my birthday.’
‘Hurray!’ said Doggo. ‘We will have to celebrate. But how? I’ve never celebrated a birthday before.’
Kitty thought that they had celebrated a birthday before. She thought that birthdays happened every year. But she wasn’t sure, and she didn’t want to sound stupid. So she didn’t say anything.