milky discharge

Milky discharge is a whitish-cloudy fluid from the vagina or penis of the dog, which can have various causes – from normal hormonal fluctuations to serious infections. The term describes the characteristic milky consistency and colour, not the actual content of the fluid.

Is milky discharge in dogs normal?

It depends on the context. In female dogs after heat or before giving birth, whitish discharge can be normal. It becomes problematic if there is a foul odour, additional symptoms of illness, or if the discharge lasts longer than one week.

Pseudopregnancy often produces milky discharge from the nipples. The female dog behaves as if she were pregnant – builds nests, collects toys and can even produce milk. This hormonal imbalance occurs about six to eight weeks after heat and usually disappears on its own.

What are the dangerous causes?

In Switzerland, a uterine infection (pyometra) is life-threatening and often manifests as milky to purulent discharge. It usually affects older, unspayed female dogs a few weeks after their heat cycle. Warning signs include fever, excessive thirst, loss of appetite, and a distended abdomen.

In male dogs, milky discharge from the penis often indicates prostate problems. The enlarged prostate presses on the bladder and intestines, causing pain during urination and defecation. Older, unneutered male dogs are particularly affected.

Vaginal or urinary tract infections are caused by bacteria and, in addition to discharge, often cause burning during urination. The female dog licks the genital area more frequently and sometimes shows blood in the urine.

When should I go to the vet?

Immediately if there is fever, loss of appetite, or if the dog appears apathetic. If these signs occur together with milky discharge, it indicates a systemic infection that must be treated quickly.

Veterinary help is also needed in cases of foul-smelling discharge, swelling in the genital area, or if the dog shows pain when urinating. In pregnant female dogs, milky discharge shortly before birth is normal – however, if it becomes bloody or foul-smelling, something is wrong.

Male dogs with milky discharge and problems defecating or urinating require a prostate examination. Treatment ranges from medication to neutering, depending on the severity of the disease.