List out some common features in cat, rat and bat.

Explanation

### Step-by-Step Text Solution

1. **Notochord**: All three animals—cat, rat, and bat—possess a notochord at some stage of their life cycle. The notochord is a flexible rod-like structure that provides support.

2. **Warm-blooded**: Cats, rats, and bats are warm-blooded animals, meaning they can maintain a constant body temperature regardless of the environment they are in.

3. **Four-chambered heart**: All three species have a four-chambered heart, which is efficient for separating oxygenated and deoxygenated blood.

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