Frog is ureotelic/uricotelic in excretion.

Explanation

### Step-by-Step Solution:

1. **Understanding Excretion in Frogs**:
- Frogs have a unique method of excretion that varies between their larval and adult stages.

2. **Excretion in Larval Frogs**:
- In their larval form (tadpoles), frogs excrete ammonia, which is a toxic nitrogenous waste product. Ammonia is highly soluble in water and is excreted directly into the surrounding environment.

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