Since Roman times, people have associated the hand's fourth digit with the wearing of rings. In many cultures, a proportionally longer ring finger in men has been taken as a sign of fertility.
The ball explodes on impact, knocking enemies to the ground and dealing 1d3+3 fire damage per two caster levels (a successful Reflex save reduces the fire damage by half and negates the knockdown effect) and 1d2+2 force damage per caster level (no save) to targets in the area.
By: Kara McCarty El Segundo, CA Replied on 04/19/2011 I believe you are thinking of a parasite called Cuterebra, which is the larvae of a botfly. Cats get these parasites by poking their noses into an animal burrow in which the adult female insect has laid eggs along the walls of the burrow entrance or near the burrow.