Mange is a parasitic infestation of the skin of animals.

Type: Rat Terrier
Age: 8 [human years]
Weight: 20 pounds

Symptoms:
-Bites her feet,making her paws red and irritated
-Also bites her tail and has red and irritated patches of skin
-Constantly has infected ears

-Always itches

Does she have the Mange,or is it just a skin irritation that will soon pass?
Yes,I do need to take her to the vet,I'm just looking for some quick information.