Brucellosis
The bacteria Brucella Canis causes brucellosis, which is a contagious infection.
Strays or dogs without access to regular veterinarian care or spay/neuter operations are typically the canines most at risk.
It's unlikely to affect any domestic pets, and it's usually a worry for breeders.
But, if it does occur, it is usually treatable but incurable.
Female and male dogs are affected differently by Brucellosis.
Infertility is the most prevalent clinical symptom among females.
In males, inflammation of the epididymis, which is a part of the testicles, is possible.
The testes will be swollen and painful in the early stages of the infection.
The testes grow hard and smaller as the illness develops.
Males who are infected frequently become sterile as a result of testicular injury.
Infected men may also develop prostatitis (prostate gland irritation), which causes difficulties peeing and defecating.
There is presently no vaccination available for brucellosis.
In terms of prevention, pre-breeding blood testing on both male and female dogs is the best bet.