While effort has gone into creating different surface types which affect the bounce and speed of the ball there is no rubber. (gamesrevisited.com)
We couldn't help but walk the track with our camera to get a good feel of the surface and turns which were usually either surprisingly bumpy or smooth depending on surface type. (teamvvv.com)
This can happen if they've been forced to eliminate on a single surface type for most of their lives, such as newspaper in a kennel or always on a concrete yard. (labradortraininghq.com)