Choosing the correct size and shape of ball for your dog depends on what type of exercises your dog will be doing on the ball. The size printed on the ball is the maximum inflation height. You can decide whether or not you want to inflate the ball to its maximum height or inflate to a lesser height. Never go over the maximum height printed on the ball.
If you plan to use your ball mainly for core conditioning, measure the length of your dog when it is standing from the front legs to the back legs. Your dog should be able to stand in a natural stance on the top of the ball without being hunched over.
You can always use a large ball for a small dog but not a small ball for a large dog. If you have more than one dog, choose a size that fits your largest dog. You may find it more comfortable for your own back to work with your dog on a larger/taller ball. Using a larger ball for a small dog also has the added benefit of providing more surface area to work on. The FitPAWS Peanut is naturally longer than the FitPAWS Egg and provides more of an elongated surface training area.
| For natural stances: |
Use this size Peanut |
Use this size Egg |
| Up to 20" length |
40cm, 50cm, 60cm, 70cm, 80cm |
65cm, 85cm |
| Up to 24" length |
50cm, 60cm, 70cm, 80cm |
65cm, 85cm |
| Up to 30" length |
60cm, 70cm, 80cm |
85cm |
| Up to 41" length |
70cm, 80cm |
|
| Up to 46" length |
80cm |
|

For weight bearing activities (when a dog is standing partially on the ground and partially on the ball) choose a ball that is slightly under your dog's withers (or highest part of the shoulders where the neck meets the back.) If you need a ball smaller than the 40cm, consider purchasing the 40cm and decrease the amount of air you pump in so that the ball is shorter than its maximum height of 40cm.
| My dog's shoulder height |
Use this size Peanut |
| 16" - 19" |
40cm (15.5" tall at maximum inflation) |
| 20" - 23" |
50cm (19.5" tall at maximum inflation) |
| 24" - 27" |
60cm (23.5" tall at maximum inflation) |
| 28" - 31" |
70cm (27.5" tall at maximum inflation) |
| 32"+ |
80cm (31.5" tall at maximum inflation) |
The FitPAWS Peanut is a good choice for beginners and for weight-bearing exercises as the unique shape of the peanut provides an easier balance challenge and rolls in one direction or plane at a time. The FitPAWS Egg is a better choice for advanced core strengthening exercises as it more unstable than the peanut and rolls in multiple directions or planes.