| Hummingbirds have such a high metabolism that they are always hours away from starving to death. |
| Palm trees are not technically trees, they're grass. |
| Oak trees do not produce acorns until they are at least 50 years old. |
| According to research by John Innes Centre team reports in e-Life journal, plants have a built-in capacity to do maths, which helps them regulate food reserves at night. |
| A duck's quack doesn't echo, and no one knows why. |
| A cockroach can live several weeks with its head cut off. it dies from starvation. |
| Giraffes only sleep for about 5 minutes at a time. |
| Wasps emit an "alarm pheromone" when you kill them, summoning the rest of their colony. |
| A giraffe and a rat can last longer than a camel without water. |
| An elephant weighs less than a blue whale's tongue. |