One-page Congressional Version with links

USFWS Fact Sheet - Secondary Pentobarbital Poisoning of Wildlife - http://cpharm.vetmed.vt.edu/usfws/usfwsfpentobarbfactsheet.pdf

http://www.ncbi.nlm.nih.gov/m/pubmed/4037499/- fate of sodium pentobarbital in rendered products

http://animalcare.lacounty.gov/cms1_031226.pdf - Disposal (Rendering) of Deceased Animals from Los Angeles County Animal Shelters