A Mexican Gray Wolf runs around their compound at the Brookfield Zoo. Wednesday, April 19, 2012. | Brian Jackson~Sun-Times
Nancia, a Mexican Gray Wolf, being given a complete physical, including a CT scans, part of a study of the endangered species to determine whether a type of nasal tumor is more prevalent in wolves or dogs. Brookfield Zoo Animal Hospital. Wednesday, April 19, 2012. | Brian Jackson~Sun-Times
Francena, a Mexican Gray Wolves being given a complete physical prior to getting a CT scans, part of a study of the endangered species to determine whether a type of nasal tumor is more prevalent in wolves or dogs. Brookfield Zoo Animal Hospital. Wednesday, April 19, 2012. | Brian Jackson~Sun-Times
Francena, a Mexican Gray Wolf, is prepared for a CT scan, part of a study of the endangered species to determine whether a type of nasal tumor is more prevalent in wolves or dogs. Brookfield Zoo Animal Hospital. Thursday, April 19, 2012. | Brian Jackson~Sun-Times
Nancia, a Mexican Gray Wolf, is wheeled into an X-Ray room while being given a complete physical, including a CT scans, part of a study of the endangered species to determine whether a type of nasal tumor is more prevalent in wolves or dogs. Brookfield Zoo Animal Hospital. Wednesday, April 19, 2012. | Brian Jackson~Sun-Times
Francena, a Mexican Gray Wolf, is prepared for a CT scan, part of a study of the endangered species to determine whether a type of nasal tumor is more prevalent in wolves or dogs. Brookfield Zoo Animal Hospital. Thursday, April 19, 2012. | Brian Jackson~Sun-Times
Francena, a Mexican Gray Wolf, is prepared for a CT scan, part of a study of the endangered species to determine whether a type of nasal tumor is more prevalent in wolves or dogs. Brookfield Zoo Animal Hospital. Thursday, April 19, 2012. | Brian Jackson~Sun-Times
Francena, a Mexican Gray Wolf, is prepared for a CT scan, part of a study of the endangered species to determine whether a type of nasal tumor is more prevalent in wolves or dogs. Brookfield Zoo Animal Hospital. Thursday, April 19, 2012. | Brian Jackson~Sun-Times
Dr. Michael Adkesson checks Nancia's teeth during a physical, part of a study of the endangered species to determine whether a type of nasal tumor is more prevalent in wolves or dogs. Brookfield Zoo Animal Hospital. Wednesday, April 19, 2012. | Brian Jackson~Sun-Times
Dr. Michael Adkesson measures Nancia's teeth during a physical, part of a study of the endangered species to determine whether a type of nasal tumor is more prevalent in wolves or dogs. Brookfield Zoo Animal Hospital. Wednesday, April 19, 2012. | Brian Jackson~Sun-Times
Rubina, a Mexican Gray Wolf, is being given a complete physical including a CT scans, part of a study of the endangered species to determine whether a type of nasal tumor is more prevalent in wolves or dogs. Brookfield Zoo Animal Hospital. Wednesday, April 19, 2012. | Brian Jackson~Sun-Times
Dr. Randi Drees, Dr. Carlos Sanchez and Head Veterinarian Tech. John Pauley prepare to give Francena, a Mexican gray wolves, a complete physical including a CT scan, part of a study of the endangered species to determine whether a type of nasal tumor is more prevalent in wolves or dogs. Brookfield Zoo Animal Hospital. Wednesday, April 19, 2012. | Brian Jackson~Sun-Times
Blood is drawn from Francena, a Mexican Gray Wolf during a physical, part of a study of the endangered species to determine whether a type of nasal tumor is more prevalent in wolves or dogs. Brookfield Zoo Animal Hospital. Wednesday, April 19, 2012. | Brian Jackson~Sun-Times
Blood drawn from Francena, a Mexican Gray Wolf during a physical, part of a study of the endangered species to determine whether a type of nasal tumor is more prevalent in wolves or dogs. Brookfield Zoo Animal Hospital. Wednesday, April 19, 2012. | Brian Jackson~Sun-Times
Dr. Carlos Sanchez checks Francena's eyes during a physical, part of a study of the endangered species to determine whether a type of nasal tumor is more prevalent in wolves or dogs. Brookfield Zoo Animal Hospital. Wednesday, April 19, 2012. | Brian Jackson~Sun-Times
Mexican gray wolves being given complete physicals including a CT scans, part of a study of the endangered species to determine whether a type of nasal tumor is more prevalent in wolves or dogs. Brookfield Zoo Animal Hospital. Wednesday, April 19, 2012. | Brian Jackson~Sun-Times
Francena, a Mexican Gray Wolf, is prepared for a CT scan, part of a study of the endangered species to determine whether a type of nasal tumor is more prevalent in wolves or dogs. Brookfield Zoo Animal Hospital. Thursday, April 19, 2012. | Brian Jackson~Sun-Times
Head Veterinarian Tech. John Pauley positions Francena, a Mexican Gray Wolf, on an X-Ray machine, part of a study of the endangered species to determine whether a type of nasal tumor is more prevalent in wolves or dogs. Brookfield Zoo Animal Hospital. Wednesday, April 19, 2012. | Brian Jackson~Sun-Times
Two Mexican Gray Wolves run around their compound at the Brookfield Zoo. Wednesday, April 19, 2012. | Brian Jackson~Sun-Times
Two Mexican Gray Wolves run around their compound at the Brookfield Zoo. Wednesday, April 19, 2012. | Brian Jackson~Sun-Times
Brookfield Zoo’s Mexican gray wolves on Thursday were given complete physicals, including a CT scans, as part of a study on the endangered species to determine whether a type of nasal tumor is more prevalent in wolves or dogs. …
