Lupa why did you just yelp?

One day we went on a trail in the woods. There were tons of berries along the sides of the trail. There were rosehip, rasberries, and other berries. After a while of walking on the trail it got really muddy. Bits, Lupa, and Nipper all just walked straight through it. We started walking on another branch of the trail. The branch of the trail that we were on led to a lake. Bits ran right in, chasing sticks which we threw for him. Nipper ran in after him trying to wrestle the sticks he caught out of his mouth. Lupa walked in following a rosehip which I threw out into the water for her to get. Once her legs were wet she came back out without getting the berry I threw into the water. She loves berries. That just shows how much she hates water. After a while we walked back. Lupa ran into the trees to explore while we were making our way around the mud. We heard her yelp. We froze. We called to her hoping she hadn't run into a big animal like a moose or a bear. She darted out of the trees and we realized that she must have run into a berry plant since they have thorns. We thought she had learned a lesson about running into the trees and how she might encounter something unpleasent. She didn't learn anything from it. The next chance she got ,which was less than a minute or so later, she darted back into the trees to explore. Once we got to a clearing close to the end of the trail we threw them sticks and my brother threw rosehip berries into the air for Lupa to catch. She caught one right in her mouth, but the other ones just bounced off of her snout. It was a great trip, including stick throwing much to Nipper's delight and a lake to swim in which Bits enjoyed very much.