Watering.
CFR · 2024-01-01 · US · Title 9
(a) Potable water must be continuously available to the dogs, unless restricted by the attending veterinarian or except as provided in § 3.17(a). (b) If potable water is not continuously available to the cats, it must be offered to the cats as often as necessary to ensure their health and well-being, but not less than twice daily for (c) Water receptacles must be kept clean and sanitized in accordance with § 3.11(b) and before being used to water a different dog or cat or a different social grouping of dogs or cats.
official document · source cfr-2024 · id 9:§ 3.10