Because Belgium was a colonialist country that had power over places where the lion was common and respected as the top of the food chain, or if you like the fiercest and noblest creature and as such made a good addition to any coat of arms.
The lion is a symbol of strength, courage and wisdom. So it was picked
The Lion is the national animal of the Netherlands.
the national animal is the lion
The Lion
The Lion is the national animal of Liberia.
The national animal of Prussia is the lion.
because at that time the proportion of tiger is less than the lion and the tiger was becoming a missing animal hence they were indicated as the national animal.
The African lion is the official national animal of Kenya
The national animal(s) of Great Britain is the lion and the bulldog.
no, lion is the national animal animal of srilanka
Lion was the national animal of India before 1972.
The Lion is the national animal of Eritrea.