...a German Shepherd dog boy.
He appeared to be about the same age as the boy, the only difference being that he was obviously an anthro German Shepherd and that he had black fluffy hair while the boy had brown hair. The dog boy was also only wearing a pair of white undies which you could have sworn was tented, but you shrugged it off as normal.
His feet looked like a hybrid between a dog's hind paws and a human's feet, though it looked more dog-like than human. On the other spectrum, his furry hybrid paw hands looked more human than canine, even though his fingers were more stubby and paw-like. And behind him was a fluffy German Shepherd tail wagging through a ripped hole in his undies, though his tail looked more lifted and curled than most of the same breed.
"Hi!" the dog boy says. "My name is Puppy! What's your name?"
"Hi! My name is Johnny!" the boy says as Puppy pants happily. "Um, I was looking for my tennis ball and you have it in your paw!"
Puppy sniffs at the tennis ball before sniffing Johnny's face and then all over the boy's body, making him yelp a bit when he stuffs his wet, black nose into his shorts covered butt, causing you to chuckle along with the rest of the audience.
"It sure smells like yours! Here! You can have it back, but I have to give it to you like a dog boy does!"
Johnny looks confused as Puppy puts the ball in his mouth, getting it covered in his dog boy drool before pushing his head forwards to meet with Johnny's. The boy is a bit flustered by the act, his blush causing you and your girlfriend to once again coo at his behavior.
He eventually brings his own face forward and takes the tennis ball into his own mouth, causing his nose to touch the dog boy's nose. You all woo at how adorable the whole scene was, not caring about the fact that the Johnny's nose began to shrink and swell, darkening into a canine nose like Puppy's.
As he takes the tennis ball, the boy couldn't help but taste dog boy's drool on the tennis ball, blushing a bit when he does so before pulling the tennis ball out.
"Your drool tastes nice Puppy!" he says.
You and the audience once again fawn over his reaction, unaware of the build up of your own saliva in your mouths. Not only that, but it seems like you can better smell your girlfriend's drool the best as your nose begins to darken as well.