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Maxs Pet Connection usually have a lot of smaller breed dogs like Chihuahuas, Jack Russell Terriers, Rat Terriers, Min-Pins, Scottish Terriers, Poodles, dachshunds, and many other breeds.
http://fldr.org/ has dachshund and dachshund/mixes.
Florida Little Dog Rescue Group - Home Florida Little Dog Rescue has a variety available for adoption.