No. Male koalas may appear threatening to other males encroaching upon their territory, but they are not fierce.
No, it is not a verb. Fiercely is an adverb.
They behave like very fierce and very angry.
A fierce countenance was all it took to halt my attacker's advance. The fierce bear was repulsed by the swarm of angry bees.
another name for fierce is angry awful bold brutal cruel horrible strong savage
He is a vicious dragon, known to get very angry (especially when things are stolen!). You wouldn't want to be around him when he is very angry.
angry, brutal, violent, dangerous, cruel, fiery, frightening, horrible, furious, terrible, threatening, wild
a fierce, frightening tiger who will pounce on your prey when provoked.
Here are the examples: The garden fence blew over as the fierce winds raged. I was scared as the big dog barked at me. It looked very fierce. My dad was angry; his temper was fierce, so I hid under my bed and waited for him to calm down
Adult koalas are simply called koalas.
Dragons are normally scared creatures like snakes, but the odd few are very strong and powerful so they are naturally angry and fierce.
The Greek god Poseidon creates raging waves when he is angry or fierce, and smooth, gentle waves when he is in a good mood.
Koalas are not primates. Koalas are marsupials.