Given the help file, it looks like any pets should gate. Feel free to say "Game Balance" and I'll be cool but at the same time the educated observer would think from the help file that they should be able to gate npcs.

Thanks, and please direct thanks to whoever wrote gate. Much more convenient than walking.

In this case, pets would be like... the kind of pets you buy from the pet store. Assorted elementals and the like don't gate with you, and that's intentional.