Zoo Stock Species and the Red List
Zoo Stock Species and the Red List
Zoo Stock
This indicates that the species is included in the Second Zoo Stock Plan, which was formulated by the Tokyo Metropolitan Government in 2018. The plan sets goals for the next 10 years in three areas: "species conservation," "contribution to wildlife conservation," and "environmental education and conservation awareness." 124 animal species are included.
What is the Red List?
Based on scientific research, this is a list of wildlife classified by rank (category) indicating the degree of risk of extinction.
Livng Things Encyclopedia shows the categories (mainland and islands) assessed by the IUCN (International Union for Conservation of Nature) at the global level, the Ministry of the Environment for Japan, and the Tokyo Metropolitan Government for Tokyo.
The higher the category in each table, the higher the risk of extinction, and CR, EN, and VU are the three categories known as "endangered species." In Tokyo, species that are not at the NT (near threatened) level but are relatively rare are considered "species of concern."
|
IUCN categories |
|
|---|---|
|
EX |
extinction |
|
EW |
Extinction in the wild |
|
CR+EN |
— |
|
CR |
Serious crisis |
|
EN |
crisis |
|
VU |
emergency |
|
NT |
Near Threatened |
|
LC・○ |
Low Concern |
|
DD |
Data shortage |
|
LP |
— |
|
Japan (Ministry of the Environment) Category |
|
|---|---|
|
EX |
extinction |
|
EW |
Extinction in the wild |
|
CR+EN |
Endangered species |
|
CR |
Critically Endangered |
|
EN |
Endangered species |
|
VU |
Endangered species |
|
NT |
Near Threatened |
|
LC・○ |
— |
|
DD |
Lack of information |
|
LP |
Endangered |
|
Tokyo Category |
|
|---|---|
|
EX |
extinction |
|
EW |
Extinction in the wild |
|
CR+EN |
Endangered species |
|
CR |
Critically Endangered |
|
EN |
Endangered species |
|
VU |
Endangered species |
|
NT |
Near Threatened |
|
LC・○ |
Unranked |
|
DD |
Lack of information |
|
LP |
Endangered |
Creatures at Ueno Zoo
Creatures at Ueno Zoo
Pygmy Hippopotamus
Choeropsis liberiensis
Pygmy Hippopotamus
Choeropsis liberiensis
アフリカの、川や沼のある湿度の高い森で、単独でくらしています。カバよりも体がずっと小さく、カバの祖先に近い姿だと考えられています。午後から真夜中にかけて活動し、葉や果実、若い芽などの植物を中心に採食します。日中は水辺や茂みなどで休み、湿った場所を好んで過ごします。
| classification | Mammalia, Artiodactyla, Hippopotamus |
|---|---|
| English name | Pygmy Hippopotamus |
| distribution | Côte d'Ivoire, Liberia, Sierra Leone, Guinea |
| Residence | tropical rainforest |
| Size |
Head torso length: 1.5-1.7m
Shoulder height: 0.7~1m Weight: 160-270 kg |
| food | Aquatic plants, leaves, grass, moss |
| Red List |
IUCN: EN (crisis)
|
On land or in water?
Hippopotamus live in grasslands with good visibility and strong sunlight, so they mostly hide in the water during the day. On the other hand, Pygmy Hippopotamus live in forests, where they can hide in the trees and bushes, so they don't stay in the water for as long Hippopotamus Pygmy Hippopotamus.
Compare your face to Hippopotamus
Hippopotamus, which often go into water, have eyes and noses that protrude upwards to make it easier for them to come out of the water. However, Pygmy Hippopotamus, which do not go into water very often, have eyes and noses that are lower than Hippopotamus.
Conservation Information
Due to forest development, the number of Pygmy Hippopotamus has decreased, and so has the number of Pygmy Hippopotamus. Therefore, Ueno Zoo is working on breeding Pygmy Hippopotamus, and by 2025, more than 10 baby hippos will have been born.