Whether a tiger is ferocious?

A tiger lives in the forest and usually recognized as ferocious animal.  We frequently see in the media that a tiger is running after its prey with its long teeth. The beast apparently looks ferocious at that moment.

But, by nature, by default, a tiger can not eat anything other than flesh. The tiger hunts animals for the purpose of its survivale. Without flesh the tiger would have died. So how can we say a tiger is ferocious ?

At the below, Maria is using my computer wearing my glass.