When trees are chopped down, they don't scream, shout, or bleed. That might explain why the planet has such a big problem with deforestation. If all trees were like the African bloodwood tree, something tells me we would be more hesitant about continuing to ruin our forests.
The bloodwood tree gets its name from its dark-red sap. When you cut one down, the red sap flows out of the severed trunk and looks a lot like blood.
The bloodwood tree is native to the African nations of Angola, Mozambique, Namibia, South Africa, Swaziland, Tanzania, Zaire, Zimbabwe, and Zambia.
The sap of the bloodwood tree is traditionally used as a dye. In some African cultures, the sap is thought to contain magical powers, and is used by tribal doctors to treat a variety of diseases.
(via Amusing Planet)
I would never expect to see blood when chopping down a tree. Talk about disturbing. Sadly, a bleeding tree is not enough to get people to stop chopping them down.