[There's no strategy involved. He's relying on speed to catch up to it and block off the lizard's escape. Once he manages to pin the pederpe with his front paws, he goes in for the kill - biting down and not letting go until he's satisfied the pederpe is dead.
...
Looks like he's contemplating eating the derpy lizard but he picks it up and carries it back to Jace to pile it with the other one.]