Snapped Spider Limb

Source
This item can be looted from the following level 1-13 Beast monsters.

Elwynn Forest 
 * Forest Spider
 * Mine Spider
 * Mother Fang

Teldrassil 
 * Webwood Spider
 * Webwood Lurker
 * Lady Sathrah
 * Webwood Silkspinner
 * Webwood Venomfang
 * Githyiss the Vile
 * Giant Webwood Spider

Ghostlands 
 * Nerubis Guard

Tirisfal Glades 
 * Night Web Matriarch
 * Vicious Night Web Spider
 * Night Web Spider
 * Young Night Web Spider
 * Sri'skulk