9 CFR 3.128 : Animals And Animal Products (§ 1.1 To Parts 593-599) — (§ 1.1 To Parts 168-199) — Animal And Plant Health Inspection Service, Department Of Agriculture (§ 1.1 To Parts 168-199) — Animal Welfare (§ 1.1 To § 12.10) — Standards (§ 3.1 To § 3.142) — Specifications For The Humane Handling, Care, Treatment, And Transportation Of Warmblooded Animals Other Than Dogs, Cats, Rabbits, Hamsters, Guinea Pigs, Nonhuman Primates, And Marine Mammals (§ 3.125 To § 3.142) — Facilities And Operating Standards (§ 3.125 To § 3.128) — Space requirements.

4 Aug 2016

Enclosures shall be constructed and maintained so as to provide sufficient space to allow each animal to make normal postural and social adjustments with adequate freedom of movement. Inadequate space may be indicated by evidence of malnutrition, poor condition, debility, stress, or abnormal behavior patterns.

9 CFR 3.128