Living alone because all species are extinct, the turtle Lonesome George died alone after unsuccessful attempts to mate with other species.
The 52 Hz whale is considered the loneliest whale in the world. While other whales have a sound frequency of 10 - 39 Hz, it has a frequency of 52 Hz, meaning no whale can hear its sound. Living in the vast ocean but with no friends, the 52 Hz whale is undoubtedly one of the loneliest creatures in the world.
Lonesome George is a Pinta Island tortoise and the last known individual of its species. In the last years of his life, this turtle was known to be the rarest creature in the world. George was discovered in 1972 and was shocking because the species was thought to be extinct. George was 60 years old and was taken to a zoo. It was tried to mate with other tortoises but was unsuccessful. This turtle died in 2012.
Toughie is the last individual name for the Rabbs frog, which is commonly found in the rainforests of Panama. Toughie was kept in a cage for protection from a widespread disease that killed the frog. However, it is said to live in a dark barrel, far from the rain forest. Toughie lived alone for 7 years.
Sudan, the northern white rhinoceros, was brought to Ol Pejeta Reserve in Laikipia, Kenya in 2009, along with one other male and two other females, all of which escaped mass poaching. When the other male died in 2014, efforts to preserve the white rhino fell back to Sudan. Due to his advanced age, Sudan has decreased sperm count and weakened hind legs, making it difficult to mate. Sudan died in 2018 of failing health.
Mangarahara fish is an ugly-looking fish, kept at London Zoo. After all efforts, the zoo still could not find a mate for them. The Mangarahara cichlid, a species of Madagascar, has disappeared from the wild because of the construction of hydroelectric dams on the Mangarahara River. The remaining two are all males. So far, the remaining two male Mangarahara cichlids have lived for 12 years at London Zoo.
