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Keep Algae away from rabbits; it is not appropriate food.

Algae

Algae (various taxa)

No—rabbits should not eat algae from ponds, tanks, or damp outdoor surfaces. Scraped green mats are not a treat, and water that looks scummy can hide worse problems. For the toxic cyanobacteria lookalike, see our blue-green algae guide, and keep unlimited hay plus clean water as the daily baseline.

Guideline: Never Feed

Type: Outdoor Plants

Other Names: Pond algae, green algae, aquarium algae, filamentous algae, pond scum (green), algal film, Chlorophyta (green algae groups)

Algae is a broad group of simple photosynthetic organisms that grow in water, on damp stone, aquariums, and outdoor ponds. Green film or stringy mats are common green algae; blue-green “algae” is actually cyanobacteria and is covered on its own page.

Often Mistaken For

Is Algae item toxic?

Ordinary green pond or tank algae is not a recommended food and may be contaminated. Blue-green algae (cyanobacteria) blooms can be poisonous to rabbits, guinea pigs, and chinchillas—do not let pets drink scummy water or eat bloom mats. Safer bias is never feed any algae on purpose.

Should I feed my pet Algae?

No. Do not feed algae from ponds, tanks, or wet outdoor surfaces to rabbits, guinea pigs, or chinchillas.

How much can I feed them?

Do not offer as food. If your pet ate pond algae or drank scummy water—especially with a blue-green bloom—call your veterinarian or a pet poison hotline right away.

Rabbit Care 101: Feeding Your Rabbit Hay Tips and Tricks Need a Vet?

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