Here is a list of more obvious signs of discomfort and stress in dogs. (blog.pawedin.com)
As a result, these pets often don't show obvious signs of illness until they are too sick to hide it anymore. (allpetsanimal.com)
If you are pregnant, the more obvious signs of pregnancy like missed menstrual cycles, positive early pregnancy tests, and a growing belly will be in your future. (doctor-info.website)