As far as I can tell, my stag isn't entering scouting mode with the rest of my party.  He isn't fading out.  Are ranger pets not able to scout?  If they move with a party that's in scout mode, do they give it away to enemies?  If so, is this a huge pain in the butt, making it better to just not use a ranger?

 

Thanks!

Hmm...that's odd.  My wolf goes into scouting mode just fine?

 

I can't be sure if the animation is different (ie. crouching down), but he definitely walks slowly as if creeping with the rest of the crew.

Could be!  The stag doesn't fade out, but he does walk slowly with the rest of the group.  I haven't noticed him actually giving away stealth yet...