problems, and some are being rehabilitated to return to the wild. Animals that are in of sanctuary are treated somewhat differently from other animals by the zoo. While normal exhibits balance the needs of the animals with those of visitors (for example, incorporating large viewing areas), the sanctuary exhibits are almost completely focused on the comfort and well-being of the animals. After the 1998 death of Ruby, the zoo's famous painting elephant, the zoo abandoned its elephant breeding program and began to focus on elephant behavior. The zoo is currently home to three Asian elephants that have a variety of behavioral issues, the most common being aggressive toward other elephants. One elephant is a former performer at a circus and was subject to mistreatment, while the other two were captured in remote regions where they were never properly socialized. Rescue and rehabilitation The zoo provides lead poisoning treatment for California condors from the Grand Canyon area. These birds are one of the most endangered species on the planet, having at one time been reduced to 22 individuals in the wild. In February 2006, they treated a female (#149) who had been released in the 1990s and her son (#304) who survived a very rare birth in the wild. Both birds were captured in the Grand Canyon region and brought back to the zoo to be treated. A California condor (#133) was still being treated for lead poisoning at the zoo as of March 2010. Ruby the elephant The Phoenix Zoo garnered worldwide attention for one of its animals, an Asian elephant named Ruby. Ruby came to the zoo in 1973, just months after being born in Thailand. After noticing Ruby doodling in the sand with sticks, her keeper decided to give her a brush and paint. Ruby quickly became known for her paintings, the sales of which raised over US$200,000 for the zoo. Art collectors all over the world joined 18-month waiting lists and paid hundreds of dollars for original prints. In 1997, Ruby became pregnant. Near the end of her 22-month pregnancy, veterinarians discovered that the calf was dead. Ruby's uterus had ruptured, and the calf had slipped out and into Ruby's abdomen. Due to complications during the surgery to remove the 320-pound fetus, Ruby had to be euthanized. Controversies In 1997, then-zoo director Jeff Williamson merged some departments of the zoo in a business move that was intended