Zambia.
not 100% sure from your description but sounds like Panama's flag.
It's not a lion, it's a bear!
No.
The flag of Great Britain is on the summit of Mount Everest because a British climber left it there. Climbers from all over the world usually leave there countrys flag on the summit.
Yellow.
On the Rastafarian flag there is a lion, and Bob was a Rastafarian so...
to show there conection to the british
Sri Lanka
a lion wearing a crown
the lion means corage there
the emu the lion and kangaroo