Virus

I was thinking about the question is a virus a non living thing so I asked the question does a virus have a mouth i have seen no footage what so ever of this to be the case therefore how can it fuel itself across the entire world without fuel or food does it have hands and legs I have seen no footage of that how does it move it has no wings either how can a virus even mutate what actual features does it have surely if scientists had identified it they would know