Research-based shortlist, not a verified-fit list. Confirm your model year, body style, trim and seat layout before buying.
This guide builds on our general guide to choosing the best kennel for your vehicle. Start there for the overall approach, or change vehicles with the selector below.
Start with your Toyota Sienna’s layout
A Sienna can provide a practical kennel-loading route, but its seat layout needs more attention than its overall size suggests. Start by comparing a dog-sized GUNNER G1 and RuffLand Intermediate behind the second row, with the third row stowed if your passenger needs allow. Neither recommendation is a verified fit. The correct installation must work alongside the seats and rails actually present in your model year.
Toyota describes the current Sienna’s third row as a Split & Stow design. That gives you a clear configuration to investigate, rather than assuming every row disappears into a flat floor. Current available long-slide second-row chairs are also different from the seating arrangements found in older Siennas. Plan around the installed chairs and consult your own manual before assuming they can be removed like seats in another minivan.
Measure the route through both the hatch and the sliding door if you want flexibility. A sliding door can offer convenient curb-side access, but the kennel must pass between the real seat positions and have a supported final location. Check rails, trim and transitions in the floor with a full-size mock-up. Do not bridge an unsupported gap or use a seat rail as a restraint anchor without explicit manufacturer guidance.
A minivan’s usefulness often comes from carrying people and bulky equipment together. Put the stroller or mobility aid into the trial layout, retain the passenger paths you need and make sure the kennel latch remains reachable. Confirm airflow around the occupied kennel rather than treating rear climate controls as proof that any location is suitable. Choose the setup that can remain correctly installed for normal trips, not only for a photograph with an empty cabin.
The checks that matter here
- Verify model year and consult the manual before changing second-row seating.
- Check the floor with the third row stowed and second-row chairs in the intended positions.
- Test the actual hatch or sliding-door loading path around rails and seat hardware.
- Keep passenger routes and stroller storage separate from kennel ventilation.
Kennels we would compare for the Toyota Sienna
Prefer a repeatable layout with full kennel support, instructed restraints and practical sliding-door or hatch access.
GUNNER G1 — select size for your dog
A candidate for a supported installation behind the Sienna’s installed second-row chairs with the third row stowed.
When we would pass: Do not assume the second-row seats can be removed or stowed like another minivan’s seats.
Check this option and its instructions →
RuffLand Intermediate Kennel
Worth comparing if you want to test both sliding-door and hatch loading routes in your chosen Sienna layout.
When we would pass: A side-door approach must remain clear of retained seating and passenger movement to be useful.
Check this option and its instructions →
These are candidates to investigate, not confirmed fits. Match the exact size and installation instructions to your dog and vehicle before ordering.
Before you order
Use the main guide’s dog-sizing and loading-route checklist to test your chosen layout. Review how to check crash-test evidence for the exact product and installation; a successful physical fit does not establish crash protection.
Bring your dog’s measurements, your model year and trim, and photos of the intended installation area to the kennel seller. Ask for the exterior envelope and usable interior measurements of the exact size and door configuration. Confirm the return terms before a trial fit.
Sources and related guides
- Toyota Sienna manufacturer information
- 2026 Toyota Sienna brochure: seating and Split & Stow configuration
- GUNNER G1 — select size for your dog — manufacturer product information and instructions
- RuffLand Intermediate Kennel — manufacturer product information and instructions
- Compare our kennel product reviews
- All 106 vehicle guides
Reviewed October 26, 2026. Recommendations are editorial judgments from published information; no vehicle-specific fit or crash result is implied.