- An individual blood cell takes about 60 seconds to make a complete circuit of the body.
- The spiral shapes of sunflowers follow the Fibonacci sequence.
- You can tell the sex of a horse by its teeth (most males have 40, females 36).
- The average raindrop weighs less than an eyelash.
- Most birds eat twice their body weight each day.
- Astronauts can't burp in space.
- African elephants only have 4 teeth.
- The life span of a house fly is between 10 to 25 days.
- Mangoes can get sunburned.
- The word racecar can be spelled the same way backwards.
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