Yeah, He looks like a little chiweenie...a dachshund/chihuahaua mix...he is so so cute! does he have a longer dachshund type body? Duke is adorable no matter what his mix is. He looks like more chihuahua then weenie dog.
You would need a full body shot to have a better idea. Could be either Min Pin or Doxie..........or something else!!
Def very Chi like though, with my Chiweenie its the Chi side that is hard to identify!