Sage's definitive ranking of pavements suitable for fetch

Surface matters. Bounce matters. Whether the postman is also on the pavement matters.

1 · Smooth asphalt, recently repaved

Top tier. Predictable, fast, generous in its return. Sage allows two seconds between throw and retrieval. No more.

2 · Old paving slabs

The bounce is unreliable but the texture is good for grip. Acceptable for "long sniff, slow chase" mode.

3 · Cobblestones

Theoretically possible. In practice, the ball goes somewhere previously unknown to physics.

4 · Gravel

Filed under "what are we doing here, exactly."