Which is cold blooded animal

Options

A. Pigeon
B. Kangaroo
C. Shark
D. Rabbit

Answer

### Step-by-Step Solution:

1. **Understanding Cold-Blooded Animals**: Cold-blooded animals, also known as poikilothermal animals, cannot regulate their body temperature internally. Their body temperature fluctuates with the environmental temperature.

2. **Identifying Groups of Cold-Blooded Animals**: The main groups of cold-blooded animals include amphibians, fishes, and reptiles. These animals do not maintain a constant internal body temperature.

3. **Differentiating Between Cold-Blooded and Warm-Blooded Animals**: Warm-blooded animals, such as birds and mammals, have the ability to maintain a constant internal temperature regardless of external conditions.

4. **Analyzing the Given Options**: In the question, we need to identify which of the provided options is a cold-blooded animal. The options include:
- Pigeon (a bird, warm-blooded)
- Kangaroo (a mammal, warm-blooded)
- Shark (a fish, cold-blooded)

5. **Conclusion**: Among the options provided, the shark is the only cold-blooded animal. Sharks belong to the class Chondrichthyes, which includes cartilaginous fishes that do not have the ability to regulate their body temperature.

### Final Answer:
The cold-blooded animal is the **shark**.

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