The Sick-looking sheep are a collection of sixteen sheep that are coloured. They are NPCs involved in the Sheep Herder and Mourning's End Part Iquests. The sheep are supposedly infected with the plague and must be incinerated, but later it is revealed that they've simply been dyed.
Red Sheep are tinted red and located near the East Ardougne north bank.
Green Sheep are tinted green and located north of East Ardougne near a potato field.
Blue Sheep are tinted blue and located near the river south of Baxtorian Falls.
Yellow Sheep are tinted yellow and located near the Fishing Guild.