Endangered species

1. Mammal

1.1. Tiger

1.1.1. Reason of endangered

1.1.2. Attribute

1.1.3. Preventing extinction

1.1.4. Way of life

1.2. Panda

1.2.1. Reason of endangered

1.2.2. Attribute

1.2.3. Preventing extinction

1.2.4. Way of life

2. Reptile

2.1. Gavial

2.1.1. Reason of endangered

2.1.2. Attribute

2.1.3. Preventing extinction

2.1.4. Way of life

3. Aquatic animals

3.1. Freshwater crab

3.1.1. Reason of endangered

3.1.2. Attribute

3.1.3. Preventing extinction

3.1.4. Way of life

4. Birds

4.1. Toucan

4.1.1. Reason of endangered

4.1.2. Attribute

4.1.3. Preventing extinction

4.1.4. Way of life