Right then. We have birds and???
and???
humans, although they have gone from predation to breeding and cultivation.
and???

The main predators are various species of dogs, cats, and bears although the bears eath almost anything. With a few oddities such as heyanas and tassie tigers (now extinct) thrown in. All four legged. A few croc and the occasional anaconda covers most of the big biters.
And no two legged top enders.
And I think you know what I mean by two legged. I mean the top, large, LAND predators. So strike out birds and sharks. At least strike out birds since the eocene or so . The hudge predatory terra birds were a two legged land predator but they are long gone.

What happened to the enviroment to cause such a sudden shift.