A dog in the San Fernando Valley was found to have Baylisascaris, or raccoon roundworm, eggs in its system during a routine ...

Heartworm disease is caused by the parasite Dirofilaria immitis. It is spread to dogs by mosquitoes and can be fatal. Adult ...

Learn how heartworm disease became widespread in dogs, reflecting an evolutionary history that spans back to ancient times.

Such evidence suggests early heartworms evolved alongside canines millions of years ago. Mosquitoes existed long before ...

The parasite, spread by mosquitos, can be life-threatening.

Public health officials warned dog owners Friday to be on alert after a dog in the San Fernando Valley was found to have ...

Research led by the University of Sydney is reshaping scientific understanding of one of the world's most widespread canine ...

Four days ago we rescued a 6-month-old puppy from a shelter in the southeast of the United States. My vet says that she has roundworm and warned me that my kids (ages 3-8 years) could get visceral ...

A parasite that can kill dogs has been discovered in California’s Colorado River for the first time, marking a concerning ...