Medical experiments on research dogs could be phased out soon--a change that's based as much on science as ethics. Pressure is coming from within the scientific community as well as from activists, following a string of scandals involving inhumane living conditions. It follows a similar phase-out in the last decade of the use of captive chimpanzees, which was driven by growing recognition of chimpanzee intelligence and the close evolutionary kinship between our species and theirs.

Two areas of science are precipitating change. Scientists are developing new types of human cell cultures and other alternatives that may mimic human disease at least as well as animals, while new research has revealed the depth of animal cognition and the richness of their emotional lives.

Scientists in government, universities, hospitals and private companies use thousands of dogs a year, often subjecting them to isolation, confinement in small, barren........

© Arkansas Online