Removal of amino group from amino acids in animals is carried out by transamination only .

Explanation

**Step-by-Step Solution:**

1. **Understanding Amino Acids:** Amino acids are organic compounds that serve as the building blocks of proteins. Each amino acid contains an amino group (-NH2), a carboxyl group (-COOH), and a unique side chain (R group).

2. **Amino Group Removal:** In animals, the removal of the amino group from amino acids is essential for the metabolism of proteins. This process is crucial for the conversion of amino acids into energy or other compounds.

3. **Transamination Process:** The primary method for removing the amino group from amino acids is called transamination. This is a chemical reaction where the amino group from one amino acid is transferred to a keto acid.

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