- Subpart A - SPECIFICATIONS FOR THE HUMANE HANDLING, CARE, TREATMENT, AND TRANSPORTATION OF DOGS AND CATS1 (§§ 3.7 — 3.20)
- Subpart B - SPECIFICATIONS FOR THE HUMANE HANDLING, CARE, TREATMENT, AND TRANSPORTATION OF GUINEA PIGS AND HAMSTERS (§§ 3.29 — 3.41)
- Subpart C - SPECIFICATIONS FOR THE HUMANE HANDLING, CARE, TREATMENT AND TRANSPORTATION OF RABBITS (§§ 3.54 — 3.66)
- Subpart D - SPECIFICATIONS FOR THE HUMANE HANDLING, CARE, TREATMENT, AND TRANSPORTATION OF NONHUMAN PRIMATES2 (§§ 3.82 — 3.92)
- Subpart E - SPECIFICATIONS FOR THE HUMANE HANDLING, CARE, TREATMENT, AND TRANSPORTATION OF MARINE MAMMALS (§§ 3.105 — 3.118)
- Subpart F - SPECIFICATIONS FOR THE HUMANE HANDLING, CARE, TREATMENT, AND TRANSPORTATION OF WARMBLOODED ANIMALS OTHER THAN DOGS, CATS, RABBITS, HAMSTERS, GUINEA PIGS, NONHUMAN PRIMATES, MARINE MAMMALS, AND BIRDS (§§ 3.129 — 3.142)
- Subpart G - SPECIFICATIONS FOR THE HUMANE HANDLING, CARE, TREATMENT, AND TRANSPORTATION OF BIRDS (§§ 3.155 — 3.168)