Before taking him to Humane Society, post on social media like FaceBook, include a picture, what's special about him, etc. Mention to neighbors who in turn can post on facebook or spread the word another way. Post a flyer on the bulletin boards you see at Kroger, cvs, ... and even CraigsList (meet at police station)
Bring him into the building and explain your situation. We recently adopted a 5yr old male and there were plenty of others looking for a friend.
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