Keen Smell. The rat has advantage on Wisdom (Perception) checks that rely on smell.
Hidden at night. Colocolo can shroud itself in Darkness. Giving it's self Pass without a trace giving (+10) to stealth
Draining Feed. If creature is undetected while feeding on it's sleeping prey for 1 hr. When that creature wakes up from long rest it gains all other benefits of a long rest but gains 1pt of exhaustion. If it gains three points of exhaustion in this way creature no longer gains benefits of long rest. at 6 pts creature dies
Cautious but Hungry. Colocolo will feed every night in the building it has claimed as a home. as long as there are creatures sleeping and know one can see it.
Bite. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 4 (1d4 + 2) piercing damage.
Run and hide. creature can use reaction to Dash twice it's movement and Hide.
Description
The appearance of the Colo Colo varies depending on the region. Sometimes it is described as a feathered rat, sometimes as a snake or lizard with a rat's head, and occasionally it is just depicted as a huge rat.After hatching, the Colo Colo will hide in a house, where it will feed on the saliva of the residents. If the Colo Colo feeds from a person, that individual will feel exhausted; if the Colo Colo is not stopped, the victim may even die. It is also said that this creature can provoke several serious diseases. The Colo Colo can be detected if someone of the house is feeling tired for no reason, or because of its cry, which is similar to an infant wailing. When it is suspected that a Colo Colo is in the house, Sometimes the only remedy is burning the building in order to kill the Colo Colo.