The animals Blackarachnia encounters are clear homages to the main cast of Beast Wars: Transformers (1996). The rhino represents Rhinox, the gorilla Optimus Primal, the giant rat Rattrap, and the cheetah Cheetor.
The whole episode is basically a giant homage to Beast Wars: Transformers (1996). For one, it was written by Larry DiTillio and Bob Forward, who were also the writers of the aforementioned series. The title of the episode is a reference to the Predacons from that show.
This is the first time we get to see what Blackarachnia's head looks like under her helmet, and also the first time Waspinator has appeared after the final episode of Beast Machines: Transformers (1999).
The way Snarl gets pinned to a mountain wall and rocks collapse on him can be seen as a nod to what happened to his original self in The Transformers: The Movie (1986).
The truck seen very briefly at the beginning in seen pulling a trailer that has stripes running along the sides of it, much like the trailer of the original Optimus Prime from The Transformers (1984).