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How to Make a Car Booster Seat for Your Pet

Updated March 23, 2017

Don't leave your pet without a view of the world. If your pet's nose only comes up to the armrest in your vehicle, build your pet a booster seat to give it a view out the window. Making a booster seat involves purchasing the supporting materials and constructing the seat.

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  1. Purchase a block of foam insulation board from a hardware store. Blocks are often sold in 4-by-8 foot sizes. The block for this project should be a minimum of 3-by-4 feet, or if your vehicle is particularly large, even bigger. Measure the width and depth of the vehicle seat in which the dog will sit. You want the block at least this wide and tall enough for the dog to see out of the window.

  2. Cut the foam insulation board to the width and height desired to fit in your car using a hacksaw. To determine this size, measure the height and width of the seat. Cut to these specifications. The height should come at least a few inches above the window.

  3. Measure your pet's legs, while it is standing, to its haunches.

  4. Cut into the top of the foam insulation board from the top front. The top will be the portion parallel to the car roof when it is in the car seat. Use the hacksaw to cut the foam insulation board so the top of the booster seat looks like a child's booster seat. Leave about 4 inches of foam on each side and the back. This will create support so your dog does not fall out. Make the seat about as deep as your dog's haunches.

  5. When you are finished, the result should look like a tall, styrofoam child's booster seat.

  6. Measure the individual surfaces of the seat. Cut the fabric to these surface sizes, leaving a few extra inches for overlap.

  7. Use the staple gun to secure the individual pieces of fabric to each side of the seat.

  8. Tip

    Line the seat with a soft and nubby fabric to give your pet an extra-smooth ride. You can also use a nail gun to secure the fabric; just ensure your nails are short enough so they don't poke through the thinner top edges.


    Pets get hurt or killed in accidents, too. Purchase a safety harness that can be connected to the seat belt while your pet rides in its booster seat. Never leave your dog in a car on a warm or hot day, even for a few minutes. Cars heat up quickly and dogs can die.

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Things You'll Need

  • 3-by-4 foot block of foam insulation board
  • A staple gun
  • Fabric to cover the booster seat (5 yards should be sufficient)
  • Hacksaw with a fine-tooth blade

About the Author

Heather Hanlon has been writing since 1994. She has worked as a technical writer, trainer and has developed websites for private clients. She is also a real estate agent. Hanlon holds a Bachelor of Arts in news writing from the University of Pittsburgh and a Master of Arts in professional writing from Carnegie Mellon University.

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