Dog tapeworm is

Options

A. Schistosoma haematobium
B. Opistorchios sinensis
C. Taenia nana
D. Echinosoccus granulosus

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks to identify which organism is referred to as the "dog tapeworm" from the given options.

2. **Analyzing the Options**:
- **Option 1: Schistosoma hematobium**: This is a blood fluke, not a tapeworm. It causes schistosomiasis and primarily affects humans in Africa and the Middle East.
- **Option 2: Opistorchia (Chloronchus sinensis)**: This is a liver fluke that infects fish-eating mammals, including humans. It is not a tapeworm.
- **Option 3: Tania Nana**: Known as the dwarf tapeworm, it infects humans, particularly children, but it is not specifically referred to as the dog tapeworm.
- **Option 4: Echinococcus granulosis**: This is indeed known as the dog tapeworm. It is a microscopic tapeworm found in dogs and other wild animals, and it can infect humans through contaminated food, water, or soil.

3. **Identifying the Correct Answer**: Based on the analysis, the correct answer to the question "Dog tapeworm is" is **Echinococcus granulosis**.

### Final Answer:
The dog tapeworm is **Echinococcus granulosis**.

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