sentences:  The above signs, especially fever, respiratory signs, neurological signs, and thickened footpads, occurring in unvaccinated dogs strongly indicate canine distemper.However, several febrile diseases match many of the signs of the disease and only recently has distinguishing between canine hepatitis, herpes virus, parainfluenza, and leptospirosis been possible.Thus, finding the virus by various methods in the dog's conjunctival cells or foot pads gives a definitive diagnosis.