The bullchickn.mpg file you have requested: Media / Videos and Trailers / User Videos / May 2011 / Half-Life - Bullchicken (Bullsquid) animation - 1.04mb is not available. Perhaps try browsing all files for the game Half-Life and upload any files you want to share or are missing. This is the only information we could locate:
A demonstration of the Bullchicken animation. A demonstration of the Bullchicken (Bullsquid) tail swinging animation.