pack animal
US /ˈpæk ˌæn.ɪ.məl/
UK /ˈpæk ˌæn.ɪ.məl/
1.
an animal used to carry loads, especially one that is not ridden
:
•
Mules are commonly used as pack animals in mountainous regions.
•
Camels are important pack animals in desert environments.