Related Clues:

• They have their ups and downs
• Like Laurel and Hardy in a '40s film
• Isn't consistent
• Dimwits
• Long-eared equines
• Mules, hinnies and such
• Hinny and ninny, e.g.
• Cart pullers
• Moves up and down
• V formers
• Mules
• Canada and snow, e.g.
• Some equines
• Jokers
• Extinct flightless birds