When the person left the dog with you did he give the dog to you or simply ask you to watch him for a little while?
Ok, legally since he has not given you the dog and relinquished ownership, he has created a voluntary bailment. Basically a bailment is where someone entrusts personal property to another to hold for them. The bailor has the right to request the return of the personal property from the bailee at any time with notice. The bailee has a duty to exercise "reasonable care" in protecting and taking care of the property..In this situation, you would need to terminate the voluntary bailment by sending him notice certified mail to the last known address you have for him informing him that you are terminating the bailment and he has 10 days to come and claim the dog or you will consider it abandoned and dispose of it. If he does not respond within the ten days, you can consider the dog abandoned and sign the dog over. Keep your certified receipt and a copy of the letter so if it ever came up, you have proof you attempted to notify the bailor.
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