Conventional medicine promotes this way of thinking by merely focusing on outward signs of disease without much attention to the cause. (naturalhealth365.com)
Cats may not show typical outward signs of the disease and may continue to eat even with severe dental issues. (second-opinion-doc.com)
In the subclinical stage, dogs are infected, but do not show outward signs of the disease though they may have laboratory test abnormalities. (web-dvm.net)