It would seem that Snivy didn't know how to use Vine Whip, which was perfectly understandable considering he was a human just yesterday. He assumed the best bet would be for him to take a few punches at the trees and hope some berries would come falling out. After all, punching was something he could do as a Human before, and turning into a Pokemon isn't going to make him forget how to do such a simple thing. But before that, he had to respond to Arylett's question inquiring about his name.
"My name is Klopp. I guess since Pawie hasn't figured out his Vine Whip yet, I'll see if I can punch something out of those trees."
He walked over to one of the trees and looked up at it. In comparison to his new body this tree was enormous. It seemed like it was towering miles into the sky, so high that he couldn't tell if there were any berries way up there. There were doubts that he could move the tree at all, but being a Riolu he should have some decent strength to back up his punches. He brushed aside his doubt and, after a short hesitation, focused on the trunk of the tree in front of him. He pulled back his arm then released a punch with all his might. The forceful thud of his paw against the tree was accompanied by the rustling of leaves above. He was surprised as he took his paw away from the bark of the tree to find that he had left a good sized dent, only distracted when a few leaves from the tree began to fall around him. Unfortunately, while there were a decent amount of leaves, there were absolutely no berries. Either there were no berries in this tree, or they required even more force to get them out. Though he couldn't figure out cause at the moment he was more distracted with the hole he had put in the bark of the tree. Never did he suspect he could do that much damage.