IATA General container requirements for domestic dogs and cats - the full overview

What this covers

• A practical summary of general container (crate) design requirements commonly referenced for air transport of dogs and cats
• What to confirm with your airline or pet transport operator before you buy or build a crate

Source and currentness

• Source note: Independent PadsPass summary based on the IATA Live Animals Regulations (LAR), Edition 50. Not an official IATA publication. Confirm the current edition and airline-specific rules before use.
• Currentness note: This page must be updated with the specific LAR edition (and date checked) before operational use.

Design and construction checklist

Structural integrity and safety

• Use a rigid, sturdy container that can withstand normal handling and nearby freight without buckling.
• Ensure the crate is built to prevent escape through seams, joints, or gaps.
• Use non-toxic materials. Avoid chemically treated or impregnated woods that could be harmful.
• Make sure all inside edges are smooth and rounded.
• Prevent protrusions (nails, screws, sharp mesh ends) that could injure an animal.

Doors and closures

• Use a door system that cannot open accidentally from inside or outside.
• Avoid relying on weak or single-point closures.
• If the crate has a plastic door, confirm the airline’s rules and ensure hardware is sufficiently strong.

Cleanliness and leakage

• The crate should be clean and leak-proof.
• Provide absorbent bedding appropriate for the species.
• Some bedding materials may be restricted by destination rules. Confirm import restrictions before travel.

Handling, spacers, and protection

• Build in spacer bars or spacer devices so ventilation openings are less likely to be blocked and handlers can stand on either side of the crate and lift it.
• Ensure handlers can move the crate safely without risk of being bitten or scratched.
• If wheels are present, remove them or render them inoperable unless the operator explicitly allows otherwise.

Dimensions and space requirements

Basic performance standard

The crate should generally allow the animal to:

• Stand naturally (without touching the roof)
• Turn around normally while standing
• Lie down in a natural position

Sizing guidance (use with caution)

Some guidance formulas exist to estimate minimum internal dimensions. These calculations are illustrative.

• Always prioritize the performance standard above.
• Airlines may enforce additional rules beyond a formula.

Brachycephalic (snub-nosed) breeds

Some airlines may impose additional container or transport restrictions for brachycephalic breeds.

• Confirm current airline or operator rules before travel.
• Consult your licensed veterinarian before travel.

Ventilation

• Provide adequate ventilation on multiple sides, with substantial ventilation toward the upper portion of the crate.
• Ensure openings are small enough (or covered with sturdy welded mesh) to prevent escape or injury.
• Design the crate so ventilation is unlikely to be blocked by other freight (spacers help).

Food and water containers

• Provide separate food and water containers when required by the operator.
• Containers should be made of non-toxic material with rounded edges.
• When required, the containers should be affixed so they cannot be dislodged.
• Prefer setups that allow filling without opening the crate, where operator rules require it.

Labels and markings

• Follow airline and operator instructions for labels.
• Do not place labels in a way that blocks ventilation openings.

Medical-scope boundary (important)

PadsPass does not provide veterinary medical advice.

• Do not rely on this page for sedation, tranquilization, medication timing, respiratory risk decisions, or fitness-to-fly judgment.
• Sedation or tranquilization decisions should only be made with your licensed veterinarian and may be restricted by airline or operator rules.

What to confirm before travel

• Your airline or operator’s latest live-animal container rules
• Destination import rules that may affect bedding, labeling, or crate materials
• Any species, size, or breed restrictions that apply to your itinerary