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What is Rabies?
Rabies is transmitted by a virus and is one of the most devastating diseases affecting mammals, including dogs and humans. The danger of a bite from a rabid dog was described in writings dated from the 23rd century BC.

What is ringworm and what causes it?
Ringworm or dermatophytosis is the common name given to a fungal infection of the superficial layers of the skin, hair, and nails. The name comes from the classical appearance of a C-shaped, red, raised ‘ring’ marking the boundary of inflammatory lesions of the infection in people. The fungi responsible for ringworm belong to a specialized group known as dermatophytes that can cause disease in both man and animals. There are many distinct species of dermatophytes. Some species only infect man or certain animals, whereas others can be spread from animals to man.

Roundworms (nematodes or Ascarids) are intestinal parasites that live freely in the intestine, feeding off of partially digested intestinal contents. Their name is derived from their tubular or "round" shape.

Rabies is caused by a virus that attacks the brain, resulting in a wide range of symptoms. The rabies virus, which is present in saliva, is usually spread by animal bites and can infect any warm-blooded mammal, including people.

Despite its name, ringworm isn't actually a worm. It's a fungal infection of the hair, skin, and nails that affects all mammals, including dogs, cats and people. Different species of fungus cause ringworm, but Microsporum canis is the most common culprit in dogs.