Three: 25cm, 45cm and 55cm across.

No — the box holds the ball on its own. A footpump or a bike pump with a needle adaptor will inflate it.

Only the look. The multicoloured version has bright orange, blue and yellow panels; the other is a navy space print. Same ball, same sizes, same price.

Pick one they cannot get their jaws around, or it becomes a chew toy. 25cm for small dogs up to about 10kg, 45cm for medium dogs to about 25kg, 55cm for the big shovers.

25cm, 45cm or 55cm across, inflated. Every measurement we hold for this product is in the specifications above.

About 360g (25cm), 640g (45cm), 940g (55cm), according to the manufacturer’s specification.

Multicoloured / 25cm, Multicoloured / 45cm, Multicoloured / 55cm, Planet / 25cm, Planet / 45cm, Planet / 55cm. Pick one above before adding to your basket.

Your estimated delivery date is shown above and updates automatically. UK orders are sent tracked — standard delivery is £2.99, and free on orders over £39.

As soon as your order is dispatched we email you a tracking link, so you can follow it all the way to your door.

Fabric cover over an inflatable bladder. Full specifications are listed above.

You have 30 days from delivery to change your mind. Just email us with your order number and we’ll send the return steps the same working day — see our delivery & returns page for details.

The 45cm for most. A typical Border Collie is 14–20kg, so 45cm is the right ball: too big to get their jaws round, and light enough to push. One size covers the whole breed. Bred to move stock, so most take to a herding ball in the first session.

The 55cm for most. A typical Labrador Retriever is 25–36kg, so 55cm is the right ball: too big to get their jaws round, and light enough to push. The breed runs 25–36kg and crosses a size step, so go by your own dog — smaller, up to 32kg: the 55cm; larger, over 32kg: a 65cm ball, which this one does not come in. Chasers rather than shovers; keep the first sessions short and it holds their interest.

The 45cm for most. A typical Cocker Spaniel is 13–14.5kg, so 45cm is the right ball: too big to get their jaws round, and light enough to push. One size covers the whole breed. Chasers rather than shovers; keep the first sessions short and it holds their interest.

The 45cm for most. A typical Staffordshire Bull Terrier is 11–17kg, so 45cm is the right ball: too big to get their jaws round, and light enough to push. One size covers the whole breed. Terriers bite before they push — if they get any grip on it at all, go up a size.

The 25cm for most. A typical Jack Russell Terrier is 5–6kg, so 25cm is the right ball: too big to get their jaws round, and light enough to push. One size covers the whole breed. Terriers bite before they push — if they get any grip on it at all, go up a size.

The 25cm for most. A typical Miniature Dachshund is 4–5.5kg, so 25cm is the right ball: too big to get their jaws round, and light enough to push. One size covers the whole breed. Hounds are chasers, and a ball they can never catch keeps them going.