Ticks are small blood-sucking arachnids which live in areas of grassland, moorland, forest and even in parks and gardens. They feed on livestock, deer, birds, mice, horses, pets and humans.
Ticks carry a range of diseases, with Lyme disease by far the most common in humans. Symptoms can be debilitating and include fatigue, headaches, dizziness and joint pain.
In severe cases, Lyme disease can cause heart problems and inflammation of the membranes surrounding the brain and spinal cord.