[FlDebra]

I agree with Amanda. Just the change in surroundings and all of the extra activity is probably enough to have her a little out of sorts. All you have really listed as symptoms are "She's shaking and panting and she's not chipper and happy" and a "look in her eyes." So, I probably would not rush to the vet just yet.

But I would take it serious enough to monitor her closely. Dogs can pant and shake because they are stressed, afraid, hot, or in pain. It can also be a sign of hypoglycemia. The karo syrup idea or giving a little Nutri-Cal would be a great idea and can't hurt.

You mentioned lots of walking, swimming in the pool, and an unexpected trip down stairs. Possibility of pain from too much activity or taking the stairs badly? Her little legs may just be stressed from more than usual exercise. She may just be stressed and afraid that her home has been changed. Puppies taken to new homes often will pant and shake til they get acclimated, so a change in her environment may be the stressor.

The flea problem could make it worse too as you probably were stressed when you found them and that passes to our pets. I live in NW Florida and use Frontline Plus. I have never had a flea (knock on wood quickly!). But I know some people have real flea problems in their yards and there may be some resistant varieties. If fleas are thick, even Frontline will not keep them off, but hopefully will be enough to not make them want to set up housekeeping and lay eggs.