Very often we ask ourselves questions, of which we never know the answer, sometimes we present doubts in front of any basic issue; the worst thing is that because they are ashamed of being stupid, we do not do it and that way we can die ignorant of very simple things.
The eyes of a hamster can fall if hung with the head down.
It is estimated that millions of trees in the world are accidentally planted by squirrels that bury their nuts and forget where they hid them.
People say "health" or "Jesus" when you sneeze, because during the sneeze the heart stops a millisecond.
Same as fingerprints, each tongue is unique.
Cats and dogs, like humans, can be left-handed or right-handed.
The human heart generates enough pressure when it pumps blood that could spread it out of the body up to 10 meters away.
A crocodile can not stick its tongue out.
In eighteenth-century Germany, women's menstrual blood was added as an aphrodisiac in foods and beverages.
Although the alligator can close its jaws with enough force to break a person's arm, the muscles that open them are so weak that a man can keep the mouth of an adult lizard closed with only one hand.
Average life of a baseball in a professional match: 7 pitches.