What's "cage free" boarding?
Yes it can be normal for dogs to be a tired after boarding. My dogs always take 2-3 days to get back to thier playful selves. Boarding and vacations can be stressfull and/or tiresome for pets. As it is they're quite exausting for people, ever have a time when you needed a vacation after your vacation? If he's happy to return then you know there wasn't anything going on for you to worry about. It sounds like they took good care of him and made sure he was happy and not too overwhelmed by it all.
Yes it can be normal for dogs to be a tired after boarding. My dogs always take 2-3 days to get back to thier playful selves. Boarding and vacations can be stressfull and/or tiresome for pets. As it is they're quite exausting for people, ever have a time when you needed a vacation after your vacation? If he's happy to return then you know there wasn't anything going on for you to worry about. It sounds like they took good care of him and made sure he was happy and not too overwhelmed by it all.