He's got some hound in him thats for sure.
Coonhound mixes are the most common of hound mixes but he looks more like a bloodhound or basset mix, something with longer, thinker, droopier ears & eyes.
He's probably got some golden ret. or yellow lab in him to make his coat an even tan color.

Do you have a full body shot of him?

He is a cutie thats for sure.