Which statement about mouse caging reflects the Guide for the Care and Use of Laboratory Animals?

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Multiple Choice

Which statement about mouse caging reflects the Guide for the Care and Use of Laboratory Animals?

Explanation:
The question assesses knowledge of the required minimum cage height for mice in the care guidelines. The Guide specifies that a mouse cage must provide at least 5 inches of height to allow normal postures and movement—enabling the mouse to stand, rear, groom, and move without contact with the ceiling. This vertical space supports welfare by permitting natural behaviors and adequate enrichment and ventilation. Options that state less than 5 inches would not meet the minimum standard, while higher heights (6 inches or 5.5 inches) exceed the minimum but do not reflect the required baseline.

The question assesses knowledge of the required minimum cage height for mice in the care guidelines. The Guide specifies that a mouse cage must provide at least 5 inches of height to allow normal postures and movement—enabling the mouse to stand, rear, groom, and move without contact with the ceiling. This vertical space supports welfare by permitting natural behaviors and adequate enrichment and ventilation.

Options that state less than 5 inches would not meet the minimum standard, while higher heights (6 inches or 5.5 inches) exceed the minimum but do not reflect the required baseline.

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