Craig The Humane Society of the United States is watching the court progress of two Moffat County ranchers charged in March with illegally killing 34 elk.
The group sent a letter to 14th Judicial District Attorney Bonnie Roesink on Tuesday asking her to, if warranted, "aggressively prosecute" the two suspects.
"Wildlife belongs to all people and when poachers step into America's wild backyard and kill animals, we need to take that seriously," said Humane Society Colorado Director, Holly Tarry, who wrote the letter to Roesink.
The District Attorney's Office could not be reached for comment.
Rodney Culverwell, 41, and Kenneth Wolgram, 43, were charged April 1 with multiple counts of willful destruction of big game, a Class 5 felony, and illegally possessing wildlife, a misdemeanor.
Culverwell is charged with 18 counts of each crime and Wolgram is charged with 16 counts of each crime.
The suspects appeared at their first advisement hearing April 15. Neither one currently has an attorney of record.
Both were ordered to appear at a status conference at 3 p.m. May 5 in Moffat County District Court to show whether they have found legal representation.
The Humane Society's letter states poachers are prolific throughout Colorado and these two cases should be used to make a statement.
"The Humane Society of the United States asks you to send a strong message to all poachers to think twice before robbing Colorado's citizens of valued wildlife," reads the letter signed by Tarry.
It also states wildlife officials estimate there are as many animals killed from poaching as legal hunts.
Randy Hampton, Colorado Division of Wildlife spokesman, said the DOW does not have an official estimate on poaching numbers across the state.
"It's impossible to tell, really, because poaching occurs in such remote areas that no one really knows," he said.
Tarry said it is a standard practice for the Humane Society to contact prosecutors in poaching cases, and that this case is not different.
The Humane Society works with law enforcement and prosecutors, she added. The group does not have reason to believe Roesink's office would prosecute the case beneath its ability.
Hampton said the DOW has "very good" communication with Roesink's office.
Although there are "rare instances that a case gets plead down that (DOW officials) may not agree with," Hampton said, there is no reason to believe that would happen in this case.
The DOW does not have a recommendation for how to prosecute Culverwell or Wolgram, Hampton said.
"At this time," he said, "we look at it as they are innocent until proven guilty."