This April Fool's Day, people won't be the only ones pranking each other. Animals -- whether real or imagined -- have been involved in pranks and myths for centuries, from Loch Ness to Bigfoot. Here are some of our favorite animal hoaxes -- and animal hoax-ers:
Sheep Who Cause Climate Change
In 2007, a small news story launched an online hoax that went viral -- all about sheep. A fake scientist from a fake institute -- Ewe Noh-Watt of the New Zealand Institute of Veterinary Climatology told the website RealClimate.org that the root of climate change lay in sheep. The story, which was complete with graphs and footnotes, claimed that the country's large numbers of white sheep contributed to the planet's albedo by reflecting sunlight back into space. And as New Zealand sheep populations declined, less light would be reflected -- causing climate change. The hoax was pretty quickly identified as a hoax -- though it was pretty convincingly done.
The Infamous Loch Ness Monster
Perhaps the most well-known animal hoax, Loch Ness has remained a subject of fascination for more than 1,400 years, after Saint Columba encountered what he thought was a strange water beast in the Scottish region. The rumor gained fresh legs (or fins?) in 1934, when a respected gynecologist, Colonel Robert Wilson, allegedly took this infamous photo of the beast. But an associate of Wilson's came forward in 1994 to confess that the photo actually showed part of a toy submarine.