%22Lucky%22 the cow elk%2C pictured here at the state-run Thomas Thorne%252FElizabeth Williams Wildlife Research Center at Sybille%2C Wyoming. Lucky then%2C in 2015%2C was a CWD survivor%2C 13 years old and weighing 600 pounds. Photo%3A Wyoming Game and Fish Department
%22Lucky%22 the cow elk%2C pictured here at the state-run Thomas Thorne%252FElizabeth Williams Wildlife Research Center at Sybille%2C Wyoming. Lucky then%2C in 2015%2C was a CWD survivor%2C 13 years old and weighing 600 pounds. Photo%3A Wyoming Game and Fish Department