Possible Clues:

• Young creature always allowed to go outside
• Speedy young thing runs into Reception at end of shift
• Allow it to be little, just about always
• Hare in its first year
• Hare less than one year old
• Little hair?
• Always allow it to get around with so little hair, by the sound of it
• Young creature for hire, always to be taken in
• By the sound of it, such little hair could not make one bald (7)
• No much hair, by the sound of it