Who Is Uno?

Betty says, 'I saw "Uno" on the first day when I arrived at the convention. I said, "Hi, Uno, how was the trip? Did you come by yourself or with the whole family?" He seemed to trying hard to answer my questions. I went further, "What breed are you judging, Uno?" He finally said, "Hi, I am Geoff, who is Uno?" Oops! I should be more careful, he has his name tag on and it did not say Uno'

On Monday, Uno appeared at the judging table. Here are Geoff and Uno, which one is Geoff and which one is Uno, can you tell?