Huisdieren
This is a tricky question to answer definitively without more context.
Specific Context: “Pigs” could refer to specific pigs in a particular situation, such as a farm or story where they might have indirectly helped during harvest by rooting up ground.
Not Typical Work Animals: Unlike oxen or horses, pigs are generally not strong enough or trained to pull plows or carts. They are primarily raised for meat.
Indirect Help: Pigs might unintentionally help by eating weeds or pests that could harm crops.
Please provide more context:
What story or situation are you thinking about?
What kind of harvest are you interested in?
Let me know more details, and I can give you a more helpful answer.