I prefer a simple nylon or fleece bootie with a velcro tie. This link is what sled dogs use, and I think they special order extra small. Otherwise, they should be simple to make.
http://www.dogbooties.com
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Mike ~ Doting Dad to Jillie, Harper, Molly, Cooper, Eddie (RIP), Lucy (RIP), Rusty (RIP) and Jack (RIP).
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