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How do burrowing animals obtain food while living underground?
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Feeding behaviour
Wild horses graze in the Badlands of North Dakota.
Burrowing animals employ several distinct strategies to obtain food while living underground, depending on their specific adaptations and environment:
- Consuming the substrate: Many burrowing animals feed directly on the rich organic substrates through which they tunnel as they move.1
- Surface foraging: Some species use their burrows primarily for protection. These animals temporarily emerge from their tunnels to gather organic sediments or other food sources found at the surface.1
- Pumping mechanisms: Certain burrowers obtain nutrients by pumping water that contains potential food sources through their burrows.1
- Alternative habitats: Instead of digging their own tunnels, some animals occupy the centers of other structures, such as sponges, where they find both protection and a renewing supply of food.1
While some fossorial animals, such as prairie dogs or groundhogs, dig burrows for nesting, they typically forage for food above ground rather than within the burrow itself.2