Wild rabbits were introduced in Australia by the first fleet in 1788. They are a major pest for agriculture, costing the country up to $1 billion annually. They graze on vegetables and crops, which prevent seedlings from regenerating. Their strong numbers and ability to reproduce rapidly is a threat to at least 156 species. In the urban environment, rabbits can damage gardens and the land under buildings. They can also transmit diseases and put other domestic animals at risk.