Which of the following wild animals is not listed in the Red Data Book of India ?

Options

A. Black buck
B. flying squirrel
C. tiger
D. leopard

Answer

To determine which wild animal is not listed in the Red Data Book of India, we need to analyze the status of each animal mentioned in the question. The Red Data Book categorizes species based on their risk of extinction, and we will look at the status of the black buck, flying squirrel, tiger, and leopard.

### Step-by-Step Solution:

1. **Understand the Red Data Book**: The Red Data Book is a comprehensive list that categorizes species based on their conservation status. It includes categories such as "Least Concern," "Near Threatened," "Vulnerable," "Endangered," and "Critically Endangered."

2. **Identify the Status of Each Animal**:
- **Black Buck**: The black buck is categorized as "Least Concern." This means it has a stable population and is not at immediate risk of extinction.
- **Flying Squirrel**: The flying squirrel is categorized as "Critically Endangered," indicating that its population has drastically decreased and is at a high risk of extinction.
- **Tiger**: The tiger is classified as "Endangered," meaning its population has significantly declined and it is at risk of becoming extinct.
- **Leopard**: The leopard is categorized as "Near Threatened," which means its population is decreasing but is not yet classified as endangered.

3. **Determine Which Animal is Not Listed**: Since the black buck is categorized as "Least Concern," it is not listed in the Red Data Book as being at risk of extinction. The other animals (flying squirrel, tiger, and leopard) are all listed due to their vulnerable statuses.

4. **Conclusion**: The wild animal that is not listed in the Red Data Book of India is the **Black Buck**.

### Final Answer:
The wild animal that is not listed in the Red Data Book of India is the **Black Buck**.