What kind of animal is a lizard? We will explain its characteristics, ecology, and habitat. This monkey is the largest species of monkey among the gibbons that can be seen in zoos and online pages. They live in the forest areas of Southeast Asia, and although they are widely distributed, their numbers have decreased, suggesting the possibility of extinction.
What is a Fukuro-gibbon? About basic status
Gibbons are mammals classified in the order Mammalia, order Primates, and family Gibbons. The scientific name is Symphalangus syndactylus. The body length is 71-90cm and the weight is 10-20kg. The list of information is as follows. The English name is siamang.
| Japanese（和名） | フクロテナガザル |
| English（英名） | Siamang |
| scientific name(学名) | Symphalangus syndactylus |
| classification（分類） | Mammalia、Primates、 Hylobatidae、Symphalangus 哺乳綱、霊長目、テナガザル科、フクロテナガザル属 |
| IUCN Status(保全状況) | VULNERABLE |
| Length（体長） | 71-90cm |
| Weight（体重） | 10-20kg |
scientific classification
- 界：動物界 (Animalia)
- 門：脊索動物門 (Chordata)
- 綱：哺乳綱 (Mammalia)
- 目：霊長目 (Primates)
- 亜目：真猿亜目 (Haplorhini)
- 科：テナガザル科 (Hylobatidae)
- 属：主に Hylobates、または Nomascus、Symphalangus など
- 種：複数の種が存在
About habitat
The Fukuro-gibbon is distributed in the Malay Peninsula and Sumatra Island.
- Geographic Distribution
Mainly Southeast Asia
Thailand, Malay Peninsula, Indonesia (Sumatra, Java, etc.), Vietnam, Southern China
Many species are found on islands and peninsulas
- Forest Environment
Dependent on tropical and subtropical rainforests
Mainly lives in the canopy layer, rarely descending to the ground
High forest density, and tree lineage is important
Environment Type Characteristics
Tropical Rainforest: High humidity and dense forest with abundant tree branches, ideal for brachiation (movement by hanging)
Lowland Forest/Mid-Altitude Forest: Moderately dense tree cover, abundant food resources
Around farmland and logging sites: Some populations are mobile, but deforestation makes this difficult
- Behavioral Environment
Exclusively arboreal
Eating, moving, resting, and breeding all occur in trees
Move by hanging between branches using their long arms
Territory
Each group has its own territory, and moves mainly during the day in search of food
- Water Sources and Food
They feed on fruits, leaves, flowers, and bark, so they choose forests rich in food.
They often replenish their water supply through fruits and leaves.
feature is? What kind of creature is it?
The Fukuro-gibbon is the largest species of gibbon. It lives in the Malay Peninsula and Sumatra, and prefers forest areas. The front legs are longer than the hind legs and there is no tail. All black except around the nose and mouth. They have a large vocal sac in their throat that can be inflated. They communicate with their friends by barking loudly using their throat pouches. They usually live in groups. It is mainly active during the day and prefers living in trees.
- Physical Characteristics
Body Type: Medium-sized ape, with very long arms, longer than their legs.
Body Length: Approximately 40-70 cm, Weight: 4-10 kg
No tail (characteristic of apes).
Face: Many species have a black face with white borders or ring-like patterns.
Coat Color: Varies by species, including black, brown, and gold.
Limbs: Long arms and fingers, ideal for brachiation, a technique used to hang from trees.
- Movement/Behavior
Specialized in arboreal life.
Move by hanging from tree branches with their long arms.
Rarely descend to the ground.
Highly agile and dexterous.
Quickly move from branch to branch to gather food.
- Diet
Mainly herbivorous (fruit, leaves, flowers, bark, etc.).
Move through the broad canopy of trees to search for food.
Some species also eat insects.
- Sociality/Personality
They often live in pairs.
Monogamy is the norm.
Family units have their own territories.
They have a strong sense of territory and communicate through song.
They sing high-pitched songs in the morning and evening to announce their territory and the presence of their mate.
- Intelligence
High motor skills and intelligence adapted to life in trees.
They have the judgment to select and eat fruits and leaves, and are known to cooperate as a pair.
What is your personality like?
Gibbons, like many monkeys, are highly social. Therefore, they place great importance on discipline, and will also warn other members of danger.
- Monogamous and family-oriented
Typically, pairs have territories, and pair bonds are very strong.
Parent-child relationships are also close, with young living with their mother and father for long periods of time.
- Sociality and Territoriality
Strongly territorial
They use vocalizations (singing) to warn others about their treetop habitat.
They live in family units, but tend to avoid contact with others.
- Highly intelligent and curious
They demonstrate their high intelligence in determining how to navigate branches and selecting food.
They are curious about new things and environments, but are cautious about danger.
- Gentle and peaceful
Low-aggression and cooperate with their family and pair.
They communicate through vocalizations, resolving conflicts with warnings rather than fighting.
- Vocal communication
Singing is a personality trait.
They announce their mates and territories in the early morning and evening.
They have a gentle and cooperative personality that values vocal communication.
What does the ecology look like?
Fukuro-gibbons live by eating plants such as fruits, nuts, leaves, and flowers. There is no set breeding season, and the gestation period is over 200 days. It is possible to give birth to 1 to 2 puppies at a time. It has a lifespan of 30 to 40 years.
- Living Environment
Habitat: Tropical and subtropical rainforests of Southeast Asia (Thailand, Malay Peninsula, Sumatra, Java, Vietnam, Southern China, etc.)
Strictly arboreal: Movement, eating, and resting are primarily concentrated in the canopy
Rarely descend to the ground
- Diet
Primarily herbivorous (omnivorous with a tendency to be herbivorous)
Fruits, leaves, flowers, bark, buds, etc.
May supplement with some insects
Selective feeding, they change their range depending on the distribution of fruit
- Sociality/Group Structure
Primarily live with a mated pair and their offspring
Monogamous and maintains a family territory
Uses vocalizations (songs) within their territory to warn and inform other individuals
Cooperative within the family, with little conflict
- Behavior Pattern
Diurnal (active during the day, resting in trees at night)
Locomotion: They move by swinging from branch to branch using their long arms (brachiation)
Move over a wide area while searching for food
They communicate by calling to establish mates and territories
- Reproduction
Sexual maturity: Females reach approximately 8 years, males reach approximately 10 years
Gestation period: Approximately 7 months
Litter size: Usually 1 pup
Rearing: Both the mother and father are involved in rearing, and the pups remain with the family for several years.
Are there any natural enemies?
Fukuro-gibbons are safe because they usually live in trees, but on the ground their natural enemies include tigers and leopards.
About baby siamangs
This article explains baby siamangs (Hylobates genus, etc.). They are perfectly adapted to arboreal life, and their relationship with their parents is crucial for their development.
- Birth and Physical Characteristics
Birth Weight: Approximately 400-600g
Body Length: Approximately 30-35cm
Coat Color: Lighter than adult fur (mostly light brown or pale)
Limbs and Tail: No tail, and limbs still thin and small, but they cling tightly to their mother’s arms
- Dependence on Mother and Father
Nursing Period: Approximately 18-24 months
Cubs are held by their mother and stay safe in the trees
Fathers are sometimes involved in raising their young, helping and watching over the mother
- Growth and Development
Mobility Acquisition: Using their long arms to learn how to move from branch to branch
Eating Acquisition: Learning to Eat Fruits and Leaves from Their Mother and Eating Small Amounts
Social Learning: Learning Cooperation and Communication Through Play with Parents and Siblings
- Behavioral Characteristics
They love to play, jumping and hanging in the trees.
They are inquisitive, touching branches and leaves and observing their mother’s behavior.
If they sense danger, they return to their mother or father.
- Protection from Predators
Chubby young are weak on their own and find safety under the protection of their mother or father.
They protect themselves from predators by hiding in the trees.
Is the fluffy gibbon an endangered species?
The fluffy gibbon is designated as an endangered species. The reason for this is land development in Southeast Asia. Deforestation is so advanced that there is no land left for them to live on, and as a result they are increasingly attacked by natural enemies.
- IUCN Assessment
Classification: Many species are listed as Endangered (EN) or Vulnerable (VU)
Reasons:
Habitat deforestation and fragmentation
Illegal hunting and pet trade
Limited habitat leads to declining populations
- Main Extinction Risks
Deforestation and Habitat Destruction
Habitat reduction due to tropical rainforest conversion to agricultural land and logging
As arboreal species, forest fragmentation makes it difficult for them to move and find food
Capture and Illegal Trade
Population decline due to capture for pets and traditional use
Habitat Isolation
Population isolation due to forest fragmentation leads to a decline in genetic diversity
- Conservation Status
Found in protected areas and national parks
Forest protection and prevention of illegal capture are essential to reducing extinction risk
Trade is regulated internationally under CITES
Is it possible to keep a fluffy gibbon as a pet?
The fluffy gibbon is an endangered species and cannot be kept by the general public. We recommend viewing them at zoos and other locations, and asking them to show you around at events. Let’s observe the males and females exhibited in the park. Their cries are so loud that they can be compared to red pandas and chimpanzees.
- Difficulty of Keeping
① Perfectly adapted to arboreal life
They excel at “brachiation,” swinging from branch to branch with their long arms.
They are unable to move freely in small cages or on flat ground, which causes great stress.
② High Intelligence and Sociality
They live in pairs or family units, so solo housing is unsuitable.
Highly intelligent, they are prone to aggression and destructive behavior when bored.
③ Dietary management is difficult.
They consume a wide variety of foods, mainly fruits, leaves, flowers, and tree bark.
It is difficult to reproduce a balanced diet at home.
④ Longevity
They can live for over 30 years in the wild, requiring long-term care.
- Legal Restrictions
Siamangs are subject to wildlife protection laws and the CITES Convention in many countries.
Illegal captivity is subject to penalties.
Even in Japan, they are considered wild animals and cannot be kept without special permission.
- Health and Safety Issues
Due to their high intelligence and strength, they are at risk of biting and scratching.
They are prone to aggression and health problems in stressful or unsuitable environments.
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