There may still be spikes, but now they get to grow to forks, then sixes or maybe eights,and get a whole lot smarter, and elusive, and harder to hunt, instead of "Gee, I'll wander aimlessly over here and then over there, because my mom just kicked me out, and I have no idea of where I'm going, or what to fear, or if it's safe to go there, because I've not been on my own for long, and
"BAM"

Voice over post mortem: "Wow that's a nice spike, big body on that fella!"