Dogs can make about 100 different facial expressions.
18
Your wounds heal faster if you lick them, you instinctively do this for that reason. Tears help, too.
20
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
Your thumb is about the same size as your nose.
124
Sunflowers can be used to clean up radioactive waste.
17
