Don't ya just love how Blizzard completely outlcassed their own pet after they give it a unique skill with the Silithids? Not only do they get an immob, but it also does damage.
I suggest that their skill is changed to:
Paralyzing Bite-
Bites the target for [rank] damage and injects them with a poison that does [rank] damage over time while paralyzing them in place for x seconds.
Ok... so it's a bit over the top. Maybe remove the dot or the upfront damage. Still needs some sort of damage.