Fatal dog disease confirmed in South Wales, with deaths reported within days

A warning has been issued to dog owners in South Wales after a case of a potentially fatal disease was identified in the region.

A veterinary practice in Cwmbran has alerted pet owners after confirming a case of leptospirosis in the area. The bacterial infection is known to cause very serious illness in dogs and can prove fatal in some cases.

The disease can be contracted through contaminated water and soil. It is also zoonotic, meaning it can, in rare cases, pass from animals to humans and cause serious illness.

Sanders Vets in Cwmbran issued the warning, urging dog owners to remain vigilant following the confirmed case. The practice advised pet owners to ensure their dogs are up to date with vaccinations to help protect them from the infection.

According to the People’s Dispensary for Sick Animals (PDSA), leptospirosis spreads through water or soil contaminated with the urine of infected animals, most commonly rats. The bacteria can enter a dog’s body through the mouth, nose, or through open wounds.

Certain environments present a higher risk. Slow-moving or stagnant water, including rivers, lakes, ponds, canals and floodwater, can carry the infection. Dogs that drink from or come into contact with such water sources are particularly vulnerable.

In addition to environmental exposure, dogs may also become infected through contact with another dog’s urine. This can happen when they sniff or lick areas where an infected animal has urinated.

Some dogs face a higher likelihood of contracting the disease. Those living on farms, dogs that regularly kill rodents, or animals that spend significant time swimming are considered at increased risk. However, experts stress that all dogs can catch leptospirosis, regardless of their lifestyle.

The infection affects vital organs, particularly the liver and kidneys, leading to severe health complications. In some cases, the progression of the disease is rapid and devastating.

The PDSA has warned that leptospirosis is extremely serious, with some dogs dying within just two days of first showing symptoms. This highlights the importance of early prevention and awareness among pet owners.

The alert serves as a reminder for dog owners across South Wales to take precautions, especially when walking pets near water sources or areas that may be contaminated. Ensuring vaccinations are up to date remains one of the most effective ways to reduce the risk of infection.

Veterinary professionals continue to emphasise vigilance, as early signs of illness may not always be immediately recognised. With the disease capable of progressing quickly, timely action is considered crucial in protecting pets.

The confirmed case in Cwmbran has prompted renewed concern, reinforcing the need for awareness about how leptospirosis spreads and the dangers it poses. Dog owners are being encouraged to stay informed and take necessary steps to safeguard their animals from potential exposure.