YES! Overstimulation which can lead to stress and becoming more anxious, possibly leading to behavior changes at home, can seem like excitement.
Usually what we look for is a happy-go-lucky dog when they arrive in the morning and the same when they leave at the end of their visit. We want a dog who's excited to be here, but not bouncing off the walls and showing stress signals. And this can go back to overstimulation, which can happen to some dogs within the day care environment.
To you they might seem very excited to be arriving and seeing their friends, but this can actually be stress signals for us to note. They are shaking with excitement, stressed, panting, jumping about. You might see them breathing heavily, or exhibiting a weird energy level that you don't normally see from your dog, and to us this can be a red flag.
A lot of people see that as, 'Oh my dog is so excited to be coming to Tails, but I worry when I see that in a dog because it's almost like they can't control their excitement and so their body just starts shaking and over-exaggerating everything.
So we do want a dog that exhibits really happy, loose body language coming and going. That they show some interest in the staff and other dogs, and they enjoy that kind of interest from the staff and other dogs as well. But that depends on the dog some dogs don't love human contact as much as others, but you want that tolerance of staff there.