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If there were, golden retrievers would be extinct! Dogs have been chewing on tennis balls since the day they made them yellow, and I haven't heard of any harmful effects yet.
http://wiki.answers.com/Q/Are_there_dangerous_chemicals...
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What the felt on a tennis ball is made of. ... What's the tennis ball fuzz made of? ... Answer: The fuzz, more properly called felt, is usually made of wool treated with various additives to make it last longer and resist staining.
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tennis.about.com/od/tennisballfaq/f/faqballs019.htm
tennis.about.com/od/tennisballfaq/f/faqballs019.htm
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The specifications for tennis balls are defined by the International Tennis Federation (ITF). This means the ball must be a certain size and weight and made with certain materials. Tennis balls are made of 2-piece rubber cores that are cemented together. This is then covered with fabric, usually wool or synthetic felt.
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www.fi.edu/wright/again/wings.avkids.com/wings.avkids.c...
www.fi.edu/wright/again/wings.avkids.com/wings.avkids.com/Tennis/Book/ball-01.html
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Smooth Ball and Bald (No Felt) and Standard Tennis Ball - Tunnel Set-Up ... First Tennis Ball Placed in the Tunnel ... Bald (No Felt) Ball...
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www.fi.edu/wright/again/wings.avkids.com/wings.avkids.c...
www.fi.edu/wright/again/wings.avkids.com/wings.avkids.com/Tennis/Project/tunnelm-01.html
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What's the difference between extra-duty and regular-duty felt on a tennis ball? Which are best for hard courts or clay courts? ... Answer: Extra duty felt is made for hard courts, which wear away the felt quickly. Regular felt is better on clay courts, which wear the felt less but ... Tennis Ball FAQ: Different Kinds of Balls...
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tennis.about.com/od/faqballs/f/faqballs18.htm
tennis.about.com/od/faqballs/f/faqballs18.htm
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However...Reebok was not the originator of this footwear folly...it was, in fact, Airwalk who made the idea of a true "tennis shoe" famous. I know because I worked there when this shoe was made. It is not a performance tennis shoe like the Reebok, but it is a made entirely out of tennis ball felt.
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www.whatsalltheracquet.com/archives/013286.php
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The Nike Hypermax No Flywire Tennis Ball Collection is starting to hit select Quickstrike accounts nationwide. Featuring a felt, tennis-ball like upper ... The Nike Hypermax No Flywire “Tennis Ball” Collection is starting to hit select Quickstrike accounts nationwide. Featuring a felt, tennis-ball like upper,
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www.sneakerfiles.com/2009/08/15/nike-hypermax-nfw-tenni...
www.sneakerfiles.com/2009/08/15/nike-hypermax-nfw-tennis-ball-quickstrike-available-now/
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Tennis ball - Wikipedia, the free encyclopedia
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A tennis ball is a ball designed for the sport of tennis, approximately 6.7 cm (2.7 in.) in diameter and is usually yellow, but in recreational play can be virtually any colour. Its colour has also ...
en.wikipedia.org/wiki/Tennis_ball
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Phut, the lid came off the container. Terry was free at last. For so long he had been crammed up tight next to his two brothers in a can on the shelf in the sports store. Now he could see the sky and feel the air on his fluffy skin and he felt happy to be out. Straight away though he felt himself falling, down, down, down.
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terrythetennisball.wikispaces.com/
terrythetennisball.wikispaces.com/
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