A mammal which can imitate human laughter is

Options

A. Dolphin
B. Seal
C. Walrus
D. Whale.

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for a mammal that can imitate human laughter. We need to identify which of the given options has this ability.

2. **Analyzing the Options**: The options provided are:
- Dolphin
- Seal
- Walrus
- Whale

3. **Researching Each Option**:
- **Dolphin**: Dolphins are known for their vocalizations. They produce a variety of sounds, including clicks, whistles, and cackling sounds. The cackling sound of dolphins is particularly noted for resembling human laughter.
- **Seal**: Seals make various sounds, but they do not imitate human laughter.
- **Walrus**: Walruses produce bellowing sounds and other vocalizations but do not mimic human laughter.
- **Whale**: Whales are known for their songs and calls, but they do not imitate human laughter.

4. **Conclusion**: Among the options, dolphins are the only mammals that can imitate sounds similar to human laughter, specifically through their cackling sounds.

5. **Final Answer**: Therefore, the mammal that can imitate human laughter is the **dolphin**.

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