Sedjinnu

Sedjinnu is a Fanged Wyvern that lurks in the darkness of the night to feast on the blood of cattle.

Physiology
Sedjinnu are most famous for their ability to inflict Undreablight that shuts down the nerves of the organism hit: combine this with the blinding mist they can emit, this allows the fanged wyvern to suck a prey items blood dry right to the tip without the prey item even knowing about it. They're vampiric in nature.

Behavior
Usually not interested in provoking other monsters and would typically avoid conflicts with monsters bigger than it but when faced with an enemy, it can use undrea, blind their opponents, use the blood they consumed from their prey as a weapon alongside suck out an enemies blood parts dry, making them feel like they're in a hot environment.

Abilities
It typically moves like a Tobi-Kadachi but has various more attacks such as the ability to unveil a cloud of mist around it which can inflict Blind to hunters, it can shoot out undrea mist from its mouth and unleash blood spyre-shaped projectiles from its horns. When they pin a hunter down, immobilise them by getting on top of them and then start sucking their blood, this can inflict Salty.

Habitat Range
Primarily nocturnal and additionally tends to be spotted in either wetland or temperate regions. Mostly in places that are occupied by Kelbi.

Ecological Niche
Despite being a fanged wyvern that can match against monsters such as Rathian and Nerscylla. They typically tend to prey on the defenseless. Their most dire prey Kelbi which they hunt down and consume daily although the likes of Anteka, Elupe and Popo wouldn't sway the bloodsucker. If desperate, they'll turn to Aptonoths, Apceros and even the likes of large fanged beasts such as Congalala while they sleep.

Biological Adaptations
Hides amongst the shadows amongst herds of Kelbi and then unveils an undreaic mist that shuts down the nerves: allowing the fanged wyvern to freely consume blood from the prey item with it not being aware until it drops dead from blood loss.