Amami rabbit

The Amami rabbit (Pentalagus furnessi), also known as the Ryukyu rabbit, is a dark-furred species of rabbit found only on Amami Ōshima and Tokunoshima, two small islands between southern Kyūshū and Okinawa in Japan. This unique animal is often called a living fossil because it is a surviving remnant of ancient rabbits that once lived on the Asian mainland. These ancient rabbits eventually disappeared from the mainland, but they continue to live on these isolated Japanese islands today. The Amami rabbit is special to scientists and nature lovers because it gives us a rare glimpse into what rabbits looked like many thousands of years ago. Protecting this species helps preserve important natural history and ensures that future generations can learn about these fascinating animals.

Evolution

The Amami rabbit, Pentalagus, is thought to come from an ancient rabbit called Pliopentalagus, which lived in China and Europe long ago during the Pliocene epoch. It is also related to a rabbit from North America named Aztlanolagus, which disappeared over 30,000 years ago. Today, its closest living relative is the Bunyoro rabbit from Central Africa. One special feature of the Amami rabbit is that it has 46 diploid chromosomes, which is different from most other rabbits.

Etymology

The name Pentalagus comes from the Amami rabbit's unique feature of having five molars on each side of its upper jaw, instead of six like other rabbits. The name furnessi honors William Henry Furness III, who first discovered this special rabbit.

Biology

The Amami rabbit eats many types of plants, including shrubs, herbaceous plants, shoots, acorns, nuts, and cambium. In summer, it likes to eat Japanese pampas grass, and in winter, it eats acorns from the pasania tree. It also eats fruits from a special plant called Balanophora yuwanensis.

This rabbit has short feet, a sturdy body, and strong claws for digging and climbing. Its ears are smaller than those of other rabbits, and its fur is thick, woolly, and dark brown, with a reddish tinge on the sides. It weighs between 2.5–2.8 kg (5.5–6.2 lb). Amami rabbits live in areas where young and mature forests grow close together, using dense forests for shelter and food. They are active at night and rest during the day in hidden spots like caves. They have a call similar to that of a pika.

Endangered species

The Amami rabbit was once threatened by hunting and trapping, but Japan protected it as a natural monument in 1921 and later as a special natural monument in 1963.

Today, the biggest threats to the Amami rabbit are habitat destruction and invasive predators. Forests where these rabbits live are being cleared for logging, farming, and building homes and resorts. The rabbits need both mature and young forests to thrive, but losing either makes it hard for them to survive. Invasive animals like the small Indian mongoose, feral cats, and dogs also hunt the rabbits. Efforts are underway to control these predators and restore habitats. Some areas, like Amami Guntō National Park, help protect the rabbits. Researchers are also monitoring rabbit populations and working on plans to keep their numbers stable.