Natterjacks are a species of toad found in the UK and Ireland. They are easily identified by their loud, repetitive call, which is why they are also known as the 'buzzing toad'. They are small in size, usually between 2-3 inches long, and have a distinctive yellow stripe running down their back. They are found in sandy habitats, such as coastal dunes and heathland, and are listed as a species of conservation concern due to their declining population.