work animal
nounUK /ˈwɜːk ˌænɪml/
US /ˈwɝːk ˌænɪml/
A work animal is an animal that people use to help them do hard jobs.
The farmer's horse is a strong work animal that pulls the plow.
OTHER MEANINGS
2. An animal trained to pull loads or carry things for people.
Oxen and donkeys are common work animals in many countries.
3. Any animal kept to do useful labor, such as guarding or herding.
A sheepdog is a work animal that helps move the flock.
4. A person who is treated as if they must do all the hard work.
He felt like a work animal, doing everyone else's chores.