(Yeah, I think a golden retriever... And I think I will go for a fox for Sherlock. I don't even know why, I just kinda think it suits him xD)

"Really," Molly arched an eyebrow, looking curious. John really must have a left an impression on Sherlock, then, if they had only just met. Molly was glad, though. Sherlock needed a friend.
"I am not acting like a little kid!" Sherlock exclaimed with a huff, though he couldn't help but return John's smile. "I was just looking into the water to see if there is anything there. I mean I'm sure there is something there and it would be interesting to see if any of the creatures had the confidence to come up close to the surface with so many boats," he replied quietly with a shrug, face serious. "Do not joke about mermaids, John. I am sure this is safe enough but I would rather not be caught unaware by one of them." Even saying this he didn't seem to mind John teasing him, smiling at his friend. It seemed it hadn't taken much to bring Sherlock out of his mood, just John paying attention to him. Because that was all he had really wanted and why he had gotten annoyed. He wanted John all to himself. And there had been a nagging worry deep down that John would decide he didn't want to be Sherlock's friend.
Though he hadn't realised it at first Sherlock noticed that the boat had began to move, along with the others, towards the school.