Out in the jungle, no one can hear you dragging a body around. Mind you, nobody notices much what you do in the city, either. Colombian director Andres Ramirez Pulido’s debut feature, La Jauria, screening in Critics’ Week at Cannes, opens with a grab-bag of images familiar from current Latin American cinema — a couple of teenage boys in neon-lit urban darkness, some elaborate sniffing and nose-wiping, a bike that shouts “stolen” as they careen down a highway — but soon detours into stranger and much more remote territory. One thing you can be sure of: wherever they are, these boys are going to be in trouble.