Mucous membranes are something we always look at when first seeing a patient. Mucous membranes usually refer to the color and wetness of the gum line. A healthy gum line is usually a pretty bright pink and slick to the touch due to the saliva. If a dog is having trouble breathing or making oxygen exchange, the gums can appear purple in color. If the dog is dehydrated, they can feel tacky or sticky to the touch.
Read more at Victoria Advocate: For the love of your pets: Evaluating your pets condition
