Definitions:

1. A domesticated animal used for transporting goods, supplies, or equipment, usually in areas where vehicles can't go. NOUN
   • Camels are the traditional pack animals of the Sahara Desert.
2. An animal trained or used to carry loads on its back, especially over long distances or rough terrain. NOUN
   • The explorers relied on pack animals to carry food and equipment through the mountains.
3. An individual or type of working animal used by humans as means of transporting materials by attaching them so their weight bears on the animal's back. NOUN
   • The Llama, a native South American pack animal, is valued for both its wool and strength.

Synonyms:

• beast of burden
• sumpter animal