deers head
What an animal on a coat of arms represents depends on several things, including:
Lions, Dragons, Griffins, Dogs, Phoenixes, Pelicans, Eagles, Fish and many more. Mostly things that represented Ferocity, to insight fear in enemies.
The most used is the lion and the unicorn.You can check it by typing coat of arms on Google.
a lion
deers head
A lion rampant is pictured in the the upper right quadrant of the shield.
a castle
The coat of arms of Benedict XVI is pictured above.
The animal on the Polish coat of arms is a white eagle.
The spanish kings royal coat of arms The spanish kings royal coat of arms
The Aqueduct
The coat of arms
An eagle.
The coat of arms of Mauritius has a Dodo Bird and Sambur Deer holding a shield.
bear
lion
The Spanish Coat of Arms