Iguanodon

In Real Life
Iguanodon were bulky herbivores that could shift from bipedality to quadrupedality. The only well-supported species, I. bernissartensis, is estimated to have weighed about 3.08 tonnes (3.4 tons) on average, and measured about 10 metres (33 feet) long as an adult, with some specimens possibly as long as 13 metres (43 feet). These animals had large, tall but narrow skulls, with toothless beaks probably covered with keratin, and teeth like those of iguanas, but much larger and more closely packed.

The arms of I. bernissartensis were long (up to 75% the length of the legs) and robust, with rather inflexible hands built so that the three central fingers could bear weight. The thumbs were conical spikes that stuck out away from the three main digits. In early restorations, the spike was placed on the animal's nose. Later fossils revealed the true nature of the thumb spikes, although their exact function is still debated. They could have been used for defense, or for foraging for food. The little finger was elongated and dextrous, and could have been used to manipulate objects. The phalangeal formula is 2-3-3-2-4, meaning that the innermost finger (phalange) has two bones, the next has three, etc. The legs were powerful, but not built for running, and each foot had three toes. The backbone and tail were supported and stiffened by ossified tendons, which were tendons that turned to bone during life (these rod-like bones are usually omitted from skeletal mounts and drawings).

In Prehistory
These sturdy Tier 4 Herbivores are very common in herds. Their claw attack is pretty decent in terms of damage. Although they arent very fast, they have very good stamina, enabling them to run away from predators quickly. They prove pretty effective in comparison to other Tier 4s, as they are able to kill an Allosaurus. However, this isn't too likely if the Allosaurus player is decently smart. Sub Adult Tyrannosaurus are good at hunting Iguanodons as they trump them in terms of damage. Iguanodons are unviable if faced with a Carcharodontosaurus or an Acrocanthosaurus, as they are unable to run, and unable to defend themselves effectively. Iguanodons high pitched roar is very loud and can be heard from a mile away. This is a massive disadvantage as any Tier 4 or 5 would take the challenge. As an Iguanodon, your best bet is to run from your predators while they're far away. This will give them time to waste their stamina, while you've got plenty left; by the time they're in striking distance, they will be out of stamina completely. This tactic was used by Parasaur players back in demo.

Pros

 * Great health
 * Decent damage
 * Decent Turn rate
 * HUGE pool of stamina.

Cons

 * Can't fight Tier 4s or 5s effectively
 * Mediocre speed
 * Mediocre defense making it susceptible to bleeders.