All are cold blooded animals except -

Options

A. Fishes, Amphibia, reptiles
B. Birds and Mammals
C. Only mammals
D. Only birds

Answer

To solve the question "All are cold-blooded animals except -", we need to identify which of the given options includes animals that are not cold-blooded.

### Step-by-Step Solution:

1. **Understand Cold-Blooded Animals**: Cold-blooded animals, also known as ectotherms, are those whose body temperature is regulated by the external environment. They cannot maintain a constant body temperature internally.

2. **Identify the Options**:
- **Option A**: Faeces, Amphibia, and Reptiles
- **Option B**: Birds and Mammals
- **Option C**: Only Mammals
- **Option D**: Only Birds

3. **Analyze Each Option**:
- **Option A**: Amphibians and reptiles are cold-blooded animals. Faeces is not an animal, so this option is not correct.
- **Option B**: Birds and mammals are warm-blooded animals (endotherms). This option includes animals that are not cold-blooded.
- **Option C**: Only mammals are warm-blooded. This option is partially correct but does not include birds.
- **Option D**: Only birds are warm-blooded. This option is also partially correct but does not include mammals.

4. **Conclusion**: The correct answer is **Option B: Birds and Mammals**, as both are warm-blooded animals and do not fall under the category of cold-blooded animals.

### Final Answer:
**B: Birds and Mammals**