Name two mammals having abdominal testes.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for two mammals that have abdominal testes, meaning their testes are located inside their bodies rather than outside.

2. **Defining Abdominal Testes**: Abdominal testes are testes that remain within the abdominal cavity. This is in contrast to most mammals, where the testes are located in an external pouch called the scrotum to maintain a lower temperature necessary for sperm production.

3. **Temperature Requirements for Spermatogenesis**: Spermatogenesis, or the production of sperm, requires a temperature that is lower than the normal body temperature. In most mammals, this is achieved by having the testes outside the body.

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