List two peculiar characters of proboscids?

Explanation

### Step-by-Step Solution:

1. **Understanding Proboscids**:
- Proboscids are a group of large mammals classified under the order Proboscidea, which primarily includes elephants.

2. **Identifying Peculiar Characters**:
- The question asks for two peculiar characters of proboscids. We will focus on distinctive features that set them apart from other mammals.

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