Jinouga info

Zinogre (ジンオウガ) is the flagship monster for Monster Hunter Portable 3rd. It is also known as the Thunder Wolf Wyvern (雷狼竜). Zinogre is classified as a Fanged Wyvern Species (牙竜種), a new class of monsters that are neither Pelagus or Flying Wyvern.

Zinogre has incredibly developed limbs, sharp fangs and claws. Its front limbs are extremely powerful and can kill prey in one brutal blow. Despite its hulking size, Zinogre is very agile and is able to perform many impressive maneuvers. The spikes on its body mostly lie straight, but when it has built up an electric charge they stick out vertically into the air.
If these electrical spikes are damaged enough, they will break doing considerable damage to the Zinogre.

Uniquely, Zinogre can 'charge itself up' by summoning Thunderbugs from the vicinity, and utilize their natural electrical abilities for its own purposes.

This charge can be lost if Zinogre takes enough damage; if this occurs Zinogre becomes much less aggressive as a result (at least until it can build up another charge). If the charge is lost, Zinogre will at some point attempt gather Thunderbugs in order to increase its attack power. During this charging state, Zinogre is left vulnerable to attacks, and Hunters have approximately 6-7 seconds to stagger Zinogre and cancel the process.

The charge has two levels; first, a weaker preliminary charge will form, and if Zinogre charges up again, a stronger charge will form. Each state of charge means Zinogre will deal a corresponding level of damage and become more agile, but beware; Zinogre enter traditional Rage mode even its final charge state. At this point its body will glow an electrical blue and its attacks increase even more in power. If hit by its electrical attacks, it will cause Thunderblight.

The states of charge can be determined aesthetically; after its first charge up, a numerous Thunderbugs fly around Zinogre's body, and after the second, all Zinogre's fur stands on end in spiked clumps.

from:monsterhunterwikia.com/Jinouga