Ubuntu releases are usually nicknamed after animals. Which of these was not a release nickname?

Ubuntu releases are usually nicknamed after animals. Which of these was not a release nickname?

• Avid Aardvark
• Hoary Hedgehog
• Jaunty Jackalope
• Warty Warthog 

 

EXPLANATION

The only one of these ridiculous names that isn't a real thing is Avid Aardvark.