9. Mad Itch 

The mad itch is the term used for a lethal herpes virus. Mostly, farm dogs are the ones in danger because this illness is caused by coming in contact with infected pigs.

The concerning part is that there are no symptoms in most of the cases. The itch will attack their nervous system which results in an unexpected death.

However if the disease is manifesting here’s the symptoms you should pay attention to: fever, drool and an uncontrollably itchiness. Despite that, unfortunately your dog is still going to die.

Is there any treatment? Unfortunately, this disease has no cure at the current moment.