Mystery #4Tier 1animal behaviour / communication
Why does a dog wag its tail, and what is it trying to tell you?
Your dog hears your key in the door and its tail goes wild, sweeping back and forth like a little flag. Dogs cannot speak a word of any language, yet somehow you know exactly what that wag means. So what is really going on when a dog wags its tail?
Your guess
What is your guess: what is a dog really saying when it wags its tail?
There's no single magic word to type, have a go in your own words, then reveal the answer to see how close you got.
Make a guess to unlock the hints and the answer.