Dogs, although one of the least common animals needed for research, are among the most important.  Many cancers in dogs are identical, or almost identical, to human cancers. The cancer in dogs often develops faster, making them an ideal model to see if a certain therapy is effective. Many breeds…

The common marmoset is important in studies for safety, reproductive biology, neuroscience, and drug development. Its small size and many similarities with humans, as well as its  differences, make the common marmoset a valued model. In one area of research, multiple sclerosis (MS), an inflammatory disease of the brain caused…

Because guinea pigs are similar to humans in the symptoms and immune response they have to bacterial infections, they have been studied for more than 200 years. They have contributed to advances in treating diseases that affect the lungs, ears, eyes, arteries, stomach, intestines, and those that are sexually transmitted.…