The Arabic word hawamil can mean pregnant animals in other contexts, but here it denotes beasts carrying loads, as shown by its grouping with working and fed animals.
Pregnancy alone does not exempt an otherwise qualifying grazing animal. The relevant distinction is working/load-bearing use or absence of grazing status, not gestation by itself.
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Miscellaneous Zakat Rules: Substitutes, Value, Grazing and the Zakat Year
The Arabic word hawamil can mean pregnant animals in other contexts, but here it denotes beasts carrying loads, as shown by its grouping with working and fed animals.
Pregnancy alone does not exempt an otherwise qualifying grazing animal. The relevant distinction is working/load-bearing use or absence of grazing status, not gestation by itself.