I agree with all the responses. He's just a baby. Being in a shelter is scary, it must be especially scary for such a young pup. I'm glad to hear you are testing him, just understand that he is already dealing with a very stressful situation. Best of luck with your choice!!!!
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Rosa

Proud Mom to Eli and Kodiak
and never to be forgotten, Shiloh and Shoshi
Every dog deserves to have a human that thinks its the greatest dog that ever lived!