The thorns are a no-go. He gets tangled up in those for a hot minute before giving up on that route, instead trying from the side. He gets right down on his belly once he realizes there are no spiny bits poking at him and begins a slow crawl further in to the bushes, all proud of himself for figuring it out. Sure, the thing inside is making a real angry noise, but what matters now is the fact that he's going to get it.