Mammals have seven cervical vertebrae except

Options

A. Giraffe
B. Elephant
C. Sloth
D. Camel

Answer

To answer the question "Mammals have seven cervical vertebrae except," we will follow these steps:

### Step-by-Step Solution:

1. **Understanding Cervical Vertebrae**:
- Mammals typically have seven cervical vertebrae, which are the bones in the neck region. These vertebrae are labeled as C1 to C7.

2. **Identifying Specialized Vertebrae**:
- The first two cervical vertebrae are specialized:
- **Atlas (C1)**: Supports the skull and allows for nodding movements.
- **Axis (C2)**: Allows for rotational movement of the head.

3. **Reviewing the Options**:
- The question provides a list of mammals. We need to determine which of these does not follow the typical pattern of having seven cervical vertebrae.

4. **Analyzing Each Option**:
- **Giraffe**: Has seven cervical vertebrae (though they are elongated).
- **Elephant**: Also has seven cervical vertebrae.
- **Sloth**: Known to have a different number of cervical vertebrae (typically fewer than seven).
- **Manatee**: Similar to sloths, they also have fewer cervical vertebrae than the typical seven.
- **Camel**: Like the giraffe and elephant, camels also have seven cervical vertebrae.

5. **Conclusion**:
- The mammals that do not have seven cervical vertebrae are **sloths** and **manatees**. However, since the question asks for one exception, we can conclude that **sloths** are a notable example.

### Final Answer:
Mammals have seven cervical vertebrae except **sloths**.

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