- Mystery Stalks the Prairie by Roberta Donovan and Keith Wolverton. http://www.skinwalkerranch.org/videos/wolverton_book.pdf
- FBI Investigations: Animal Mutilations https://vault.fbi.gov/Animal%20Mutilation/Animal%20Mutilation%20Part%202%20of%205/view
- An Alien Harvest by Linda Moulton Howe. https://www.amazon.com/Alien-Harvest-Evidence-Mutilations-Abductions/dp/0962057010
- A Strange Harvest – a documentary produced by Linda Moulton Howe. https://www.youtube.com/watch?v=qRqgQ5FD2uI
- The pharmacokinetics of xylazine hydrochloride: an interspecific study. https://www.ncbi.nlm.nih.gov/pubmed/7349331
- Chemical capture of free-ranging cattle: immobilization with xylazine or medetomidine, and reversal with atipamezole. https://www.ncbi.nlm.nih.gov/pubmed/7913274
- Pharmacokinetics and pharmacodynamics of carfentanil and naltrexone in female common eland (Taurotragus oryx). Cole A1, Mutlow A, Isaza R, Carpenter JW, Koch DE, Hunter RP, Dresser BL. https://www.ncbi.nlm.nih.gov/pubmed/17319131
- Carfentanil pharmacology: http://wildpro.twycrosszoo.org/S/00Chem/ChComplex/Carfentanil.htm
9. Hair sample analysis of bison mutilation case in Saskatchewan http://www.theblackvault.com/casefiles/analysis-samples-related-bison-mutilation-saskatchewan-canada-discovered-march-13-2008/#
10. YouTube video of a bison mutilation case in Saskatchewan https://www.youtube.com/watch?v=uEaVKhgxkFM
11. Interview with Pam Conley who witnessed a UFO behind her house and the following morning discovered a fully grown cow in a pine tree 30 – 40 feet above the ground below the same area where the UFO was seen. Note: this report only accessed with a subscription to Earthfiles.com. If you are interested in cattle mutilations you must listen to this interview!
https://www.earthfiles.com/2014/03/28/large-orange-disc-cuts-tall-pines-into-circle-and-drops-cow/
Mysterious Cuts - A Study of Cattle Mutilations in the USA and Canada. 