Susan H. Gray, a zoologist, has written over 140 reference books for children, and enjoys writing about animals and topics that engage children. Animals Helping to Detect Disease is one that will be of interest to kids. It is full of photos of animals being used to detect diseases, such as dogs using their keen sense of smell volatile organic compounds (VOCc) from diseased tissues, and rats smelling samples to detect TB.

The book includes a history of medical diagnosis, how dogs have been used in other helpful ways (searching for lost people), and the technology being tested for ‘electronic noses’ to sniff out disease.

There is a glossary and index, as well as resources for further study.