Sounds like Achilles is doing really well for the most part.

I'm with Daisy- I would guess the extra panting is from exertion.  Tripawds have to work harder to do most everything. Probably accounts for the extra sleeping too. He really isn't that far past a major surgery and change in his life. He will get stronger as time goes on. My little tri-pug Maggie always broke into a pant sooner than quad-pug Tani.

And Maggie was unhappy for about 6 weeks after surgery.  No physical complications, but she was an obstinate pug who didn't like change. She came around- but on her own time line.

The licking may be a sign of stress or boredom.  My rescue pug Obie did not have a good start in life and developed some OCD type behaviors.  One thing he does is lick- his front left paw, rugs, clothes, and the air.  It is really irritating.  He does it more when he is stressed or agitated.  I have found distraction to be the best way to get him to stop.  I'll play with him, or get him to chew on a bone. Also when he is tired he doesn't do it as much.  I've heard a couple other people here talk about the licking, but it stopped when things got closer to normal.  I would keep an eye on the behavior and see if it decreases as Achilles gets stronger.  If it doesn't stop or gets worse I would talk to your vet or a trainer. 

Karen and the pugapalooza