They get their common name from their large noses (nose-leafs), which are shaped like horseshoes. The nose-leafs help with echolocation; the bats use their nose to make a constant frequency, high-duty call to find their prey. They hunt insects and spiders. Little is known about their mating systems, but at least one species is monogamous, while another is polygynous. Gestation is about seven weeks and one baby is produced at a time. Bats live for six or seven years, but one greater horseshoe bat lived more than 30 years.