
The lion is a common charge in heraldry. It traditionally symbolises bravery, valour, strength, and royalty, because historically it has been regarded as the king of beasts.
Wah lau Alex Tan, you should learn the history on why do lions always appear on crests all over the world before making stupid assumptions like the lion signifies England or Singapore uses it because we are a lion city leh! So much fail sia!
Source: https://en.wikipedia.org/wiki/Lion_(heraldry)#Lions_vs._Leopards