In this undated photo provided by the Wildlife Conservation Research Unit, Cecil the lion rests in Hwange National Park, in Hwange, Zimbabwe. Two Zimbabweans arrested for illegally hunting a lion appeared in court Wednesday, July 29, 2015. The head of Zimbabwe's safari association said the killing was unethical and that it couldn't even be classified as a hunt, since the lion killed by an American dentist was lured into the kill zone. (Photo by Andy Loveridge/Wildlife Conservation Research Unit via AP Photo)

Activist Lisa Berger, of St. Paul, Minn., reads a note among notes and stuffed animals outside Dr. Walter James Palmer's dental office in Bloomington, Minn., Wednesday, July 29, 2015. Palmer allegedly paid $50,000 to track and kill Cecil, a protected lion, just outside Hwange National Park in Zimbabwe. (Photo by Ann Heisenfelt/AP Photo)

Resident Autumn Fuller, 10, places a stuffed animal at the doorway of River Bluff Dental clinic in protest against the killing of a famous lion in Zimbabwe, in Bloomington, Minnesota July 29, 2015. A Zimbabwean court on Wednesday charged a professional local hunter Theo Bronkhorst with failing to prevent an American from unlawfully killing “Cecil”, the southern African country's best-known lion. The American, Walter James Palmer, a Minnesota dentist who paid $50,000 to kill the lion, has left Zimbabwe. He says he did kill the animal but believed the hunt was legal and that the necessary permits had been issued. (Photo by Eric Miller/Reuters)

Sarah Madison (L) holds her son Beckett, 3, as her daughter Quinn, 5 (in costume), look at stuffed animals blocking the doorway of River Bluff Dental clinic in protest against the killing of a famous lion in Zimbabwe, in Bloomington, Minnesota July 29, 2015. (Photo by Eric Miller/Reuters)

A K-9 Unit Bloomington Police dog sniffs at stuffed animals blocking the doorway of River Bluff Dental clinic in protest against the killing of a famous lion in Zimbabwe, in Bloomington, Minnesota July 29, 2015. (Photo by Eric Miller/Reuters)

Hayley Hoppe (R) sits with her daughters Piper, 10, (L) and Paisley, 8, (C), in front of the doorway of River Bluff Dental clinic in protest against the killing of a famous lion in Zimbabwe, in Bloomington, Minnesota July 29, 2015. (Photo by Eric Miller/Reuters)

Sarah Madison (L) holds her son Beckett, 3, as her daughter Quinn, 5 (in costume), look at stuffed animals at the doorway of River Bluff Dental clinic in protest against the killing of a famous lion in Zimbabwe, in Bloomington, Minnesota July 29, 2015. (Photo by Eric Miller/Reuters)

Piper Hoppe, 10, from Minnetonka, Minnesota, holds a sign at the doorway of River Bluff Dental clinic in protest against the killing of a famous lion in Zimbabwe, in Bloomington, Minnesota July 29, 2015. (Photo by Eric Miller/Reuters)

Stuffed animals and notes lie outside Dr. Walter James Palmer's dental office in Bloomington, Minn., Wednesday, July 29, 2015. (Photo by Ann Heisenfelt/AP Photo)

A woman writes on a sign outside Dr. Walter James Palmer's dental office in Bloomington, Minn., Wednesday, July 29, 2015. (Photo by Ann Heisenfelt/AP Photo)

Stuffed animals and notes lie outside Dr. Walter James Palmer's dental office in Bloomington, Minn., Wednesday, July 29, 2015. (Photo by Ann Heisenfelt/AP Photo)

Mark Balma works on a mural of Cecil the lion outside Dr. Walter James Palmer's dental office in Bloomington, Minn., Wednesday, July 29, 2015. (Photo by Ann Heisenfelt/AP Photo)