Leptospirosis,, your dog or cat could be at risk. Know the symptoms

If your dog or cat has access to drinking water from creeks, rivers or other outside water it
could be affected with this bacteria. Please read this article written by DVM Ron Hines;
https://www.2ndchance.info/leptospirosis.htm

It is very serious and one of my favorite dogs is severly sick with this and may not recover.
You should know the symptoms. I have copied this from the above article:
Early treatment is essential for recovery.

The most common signs are fever and depression. These pets are cold, shivery, and stiff. They may carry their tummies tucked up do to pain. Some drool and vomit and most loose their appetite. Fever causes many dogs to drink excessively.
Later in the disease, a few pets will develop eye inflammations (uveitis), nervous system abnormalities or pass red-tinged urine. As the disease progresses, the pet may become dehydrated due to the fever, vomiting and disinterest is drinking. A drop to subnormal body temperature is a very grave sign. A few dogs, particularly juveniles, will die suddenly before many of these signs occur.
When the liver has been damaged, the pet’s skin may take on a yellowish tinge (=jaundiced = icteric) and show all the symptoms of hepatitis. When the kidneys have been severely damaged, the pet may show the signs of uremia. These organ changes can be temporary – or permanent.