Animal Facts: Which of These Are Actually True?

The reason animal trivia works so well is that the true answers routinely sound less plausible than the false ones. Three hearts, blue blood and a giraffe with the same number of neck bones as you are all real.

If you want one fact to carry out of this: the seven-vertebrae rule holds across nearly every mammal, from mice to whales. Nature did not add more bones to the giraffe — it just made the existing ones enormous.