By dirt bike do you mean and enduro bike or a motocross bike or some other bike at all? For any bike except motocross bike you definitely need license, and for motocross bike you don't, because you can't ride it on the streets at all... You can only use it in motocross tracks and for that you need to have a special permit...
You do not need a license to operate an off road bike.
The YZ is a motocross bike, the trail or woods bike is a WR426.
motocross bike is a off road bike
A cr250 is a motocross bike
Yes, if you have a MV Operators License, a motorcycle drivers license and liability insurance on the bike.
"In many ways, motorcycle, dirt bike, and motocross insurance is very similar to regular automobile insurance. The different insurance options that vary from region by region and market by market can offer coverage for injuries to the rider and others, damage to property, and damage to the bike and its parts."
Become enthusiastic about motocross bikes.
Yes, a motocross bike will have stiffer suspension and the gearbox isn't the best for the woods riding.
Motocross is a form of dirt bike racing that is held on a outdoor track.
a bmx bike