7. Dogs sweat through their tongues



Nope. Dogs actually sweat through their footpads. They do use their tongues to regulate their body temperature, however.

8. Bananas grow on trees



Actually, the banana plant itself is basically a huge herb, which is related to grass, not trees.

9. If you touch a baby bird, the mother will abandon it



Simply not true. Birds have a limited sense of smell, so they won't abandon their offspring just because you touched it. The reason you shouldn't touch them is because they're very delicate.

10. Different parts of the tongue have different taste buds



aste buds are distributed all over the tongue, and each part can sense sweet, sour, salty, bitter and umami (savory).

11. Sharks don't get cancer



They do get cancer, sorry.

12. Black holes are gigantic holes in the fabric of space



Black holes are just immensely dense objects, which causes them to have an incredibly strong gravitational pull.