Necturus or mud puppy is also known as

Options

A. water newt
B. water Dog
C. both A and B
D. himalayan salamander.

Answer

### Step-by-Step Solution:

1. **Identify the Organism**: The question asks about "Necturus" or "Mud Puppy."
- Necturus refers to a genus of aquatic salamanders.

2. **Classification**: Understand the classification of Necturus.
- Necturus belongs to the order Eurodela and the family Proteidae.

3. **Common Names**: Determine the common names associated with Necturus.
- Necturus is commonly referred to as "Mud Puppy" and "Water Dog."

4. **Geographical Distribution**: Note where Necturus is typically found.
- They are native to the Eastern United States and Canada.

5. **Species Identification**: Identify the most common species within this genus.
- The most common species is Necturus maculatus.

6. **Morphological Characteristics**: Recognize the unique features of Necturus.
- Adults retain larval characteristics, such as external gills and no eyelids.

7. **Conclusion**: Based on the information, determine the correct answer to the question.
- The Necturus or Mud Puppy is also known as "Water Dog" or "Mud Puppy."

### Final Answer:
Necturus or Mud Puppy is also known as "Water Dog" or "Mud Puppy."

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