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• Leptospirosis in dogs

  Learn about leptospirosis in dogs, what symptoms to look out for, how it gets diagnosed, treated and how to help prevent it. Written by PDSA vets.

• Lice in cats and dogs

  Louse infestations in cats and dogs are quite rare. They are most common in vulnerable pets (young, old or unwell) and pets kept in dirty, overcrowded conditions.

• Lyme disease in dogs

  Lyme disease is an illness spread by ticks. It’s caused by a bacteria that is spread when a tick attaches to your pet. It can cause a variety of vague symptoms.

• Parasites in dogs

  Mites and lice are tiny parasites that like to live on dogs (and other species). They damage the skin by biting or burrowing and often cause intense irritation.