Many place in the world have permanent or mobile displays of moving animatronic dinosaurs.
Several companies specialize in the design building and shipping of such incredibly huge and fascinating displays.
The technology to create a 100 foot dinosaur or a 1 foot dinosaur is similar but one must recognize the differences in scale and weight.
A 100 foot dinosaur will be made of lighter weight materials like aluminum and figerglass but still the weight of the head or limbs can be in the hundreds of pounds.
So the use of much larger higher torque servos would be required along with heavier power supplies and the risk to the public if such a dinosaur display were to break or fall onto a customer.