Pneumatic bones are expected to be found in

Options

A. pigeon
B. house lizard
C. frog's tadpole
D. flying fish

Explanation

To determine where pneumatic bones are expected to be found, let's analyze the options provided in the question step by step.

### Step-by-Step Solution:

1. **Understanding Pneumatic Bones**:
- Pneumatic bones are hollow bones that contain air spaces. They are primarily found in birds and some other animals that require lightweight skeletal structures for flight.

2. **Analyzing the Options**:
- **Option 1: Pigeon**:
- Pigeons are birds. Birds are known to have pneumatic bones to reduce their body weight and assist in flight. Therefore, this option is likely correct.
- **Option 2: House Lizard**:
- House lizards are reptiles. Reptiles do not typically have pneumatic bones. This option is incorrect.
- **Option 3: Frog Tadpole**:
- Frog tadpoles are amphibians. Amphibians do not possess pneumatic bones. This option is also incorrect.
- **Option 4: Flying Fish**:
- Flying fish are fish. Fish do not have pneumatic bones as they do not require the same adaptations for flight as birds do. This option is incorrect as well.

3. **Conclusion**:
- After analyzing all the options, the only animal that is expected to have pneumatic bones is the pigeon, which is a bird.

### Final Answer:
Pneumatic bones are expected to be found in **Option 1: Pigeon**.

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