I mean, the Preds are creatures with animalistic abilities and tendencies. They can withstand jumps from 30 feet or more straight down, and then jump back at least as high, as evidenced by the City Hunter's attack on Keyes' team in Predator 2. they can climb almost any surface, be it trees, or nearly sheer surfaces like buildings. Their ability to hunt by sensing body heat is phenomenal. And let us not forget their strength and durability. Put that together with their technology, and the Predator hounds [Predators] and predator dogs [The Predator] seem rather redundant.
Predators was far from being my favorite Predator movie, but the creatures, to some extent, behaved like traditional Preds, save for the Tracker. I could sort of forgive the Falconer because he did use technology for the hunt; sort of a smart disc with eyes, that required him to actually hunt and capture prey. the idea of the Tracker has never sat right with me. For all intents and purposes, Predators are animals with humanoid behaviors--they don't really need animals to track their prey. the only benefit of the hounds were that they were fodder for Royce and the other killers, causing them to deplete their ammo, but, the Jungle and City Hunters were capable, for the most part, of doing the same with active cammo. Like I said, just seemed a bit redundant, and takes away from the horror of being hunted by an actual monster with better tech than we have.