Loose Stool after lots of exercise and activity?

[Paul Schumacher]

Our Zoe had a big weekend, playing at doggie daycare for the first time for a couple hours Saturday and then a puppy class yesterday morning.  Lots of play with new and other dogs, in addition to her normal routine of walks.  Since Saturday morning, her stools have been a little loose.  Could this be caused from excitement/stress of the new situations?  She's seems fine otherwise-- happy, alert (when awake), wagging, appetite, etc.  She might be a little sleepier than usual still (she was wiped Sat night and Sunday night), or I may just be imagining that because I'm a little concerned.  She also had more treats than usual yesterday morning in her puppy class.

Based on other threads, I'm adding a little pumpkin to her food and white rice tonight.

Has anyone else encountered this type of stomach upset, presumably from excitement and/or more treats?  If the stool becomes diarrhea I will take her into the vet, but at what point should I be concerned if stools don't harden back up?

Thanks!

[Karen, Jasper and Jackdoodle]

I'm glad she's better and hope the fecal comes back negative! 

I don't think teething would be responsible for sleepiness, although I think it can be responsible for loose poop, at least in human babies. :)