Will Burrard-Lucas / Black and white image of people viewed through sedated African elephant (Loxodonta africana) tusks during radio collaring operation. Tsavo Conservation Area, Kenya. Editorial use only.

Jen Guyton / Scientists with Cape buffalo (Syncerus caffer) that has been sedated for collaring. Gorongosa National Park, Mozambique

Sebastian Kennerknecht / Snow Leopard (Panthera uncia) biologist, Shannon Kachel, and veterinarian, Ric Berlinski, measuring canine tooth of male during collaring, Sarychat-Ertash Strict Nature Reserve, Tien Shan Mountains, e...

Sebastian Kennerknecht / Snow Leopard (Panthera uncia) veterinarian, Ric Berlinski, and ranger, Urmat Solokov, drawing blood during collaring of male snow leopard, Sarychat-Ertash Strict Nature Reserve, Tien Shan Mountains, e...

Sebastian Kennerknecht / Snow Leopard (Panthera uncia) biologist, Shannon Kachel, measuring tail during collaring of male snow leopard, Sarychat-Ertash Strict Nature Reserve, Tien Shan Mountains, eastern Kyrgyzstan

Sebastian Kennerknecht / Snow Leopard (Panthera uncia) biologist, David Cooper, stimulating circulation of paw during collaring of male snow leopard, Sarychat-Ertash Strict Nature Reserve, Tien Shan Mountains, eastern Kyrgyzs...

Sebastian Kennerknecht / Snow Leopard (Panthera uncia) biologist, Shannon Kachel, veterinarian, Ric Berlinski, volunteer, David Cooper, biologist, Rahim Kulenbek, and ranger, Urmat Solokov, collaring male snow leopard, Sarych...

Sebastian Kennerknecht / Snow Leopard (Panthera uncia) biologist, Shannon Kachel, veterinarian, Ric Berlinski, and volunteer, David Cooper, collaring male snow leopard, Sarychat-Ertash Strict Nature Reserve, Tien Shan Mountai...

Sebastian Kennerknecht / Snow Leopard (Panthera uncia) biologist, Shannon Kachel, veterinarian, Ric Berlinski, volunteer, David Cooper, biologist, Rahim Kulenbek, and ranger, Urmat Solokov, collaring male snow leopard, Sarych...

Sebastian Kennerknecht / Snow Leopard (Panthera uncia) biologist Shannon Kachel, collaring wild male snow leopard at night, Sarychat-Ertash Strict Nature Reserve, Tien Shan Mountains, eastern Kyrgyzstan

Sebastian Kennerknecht / Snow Leopard (Panthera uncia) biologist, Shannon Kachel, keeping wild male warm during collaring, Sarychat-Ertash Strict Nature Reserve, Tien Shan Mountains, eastern Kyrgyzstan

Sebastian Kennerknecht / Snow Leopard (Panthera uncia) veterinarians, Ric Berlinski and John Ochsenreiter, with ranger, Zoldoshbek Bektemirov, checking vitals during collaring of wild male snow leopard, Sarychat-Ertash Strict...