Tigris bovis    (April Fool's Day - 2014)

Researchers at Clemson University in South Carolina announced the successful cross-breeding of a tiger and cow to produce a new species, Tigris bovis. Despite their appearance, the breed was actually very docile. But the researchers noted that "their strange appearance has led to a 64% decrease in cow tipping, which is just unprecedented."

The Tigris bovis also had to be kept away from chickens, as it had a tendency to viciously attack them.