The extremely dangerous Chicken Cow as defined by the late musician and artist Wesley Willis is a beast that only comes out when it is 25 degrees below zero and is known for breaking glass and attacking his brother by stabbing him in the ass on at least 1 occasion (possibly with a knife or it's beak). Wesley notes that the animal has killed at least 100,000 people. It is also desribed as having a tendancy towards decapitating its victims or "rip your head off" as Wesley puts it. Physical description was never provided about the animal but, it's assumed that it has the head of a cow and the lower body and wings of a chicken due to its ability to fly and capability of jumping as high as a bird.
"This beast attacked my brother
It stabbed him in the ass while he was in the cold
His hands were frostbitten
His hands were also numb... The Chicken Cow The Chicken Cow The Chicken Cow"