I have a 2 year old lab and yesterday I took him to a “dog day care” facility to try it out. He played with other dogs all day and was exhausted when I picked him up. This morning he didn’t eat breakfast (which has never happened) but did eat his lunch. He’s been kind of lethargic (though went on his walks), didn’t touch his dinner and around 5:00 pm he threw up. He is still lethargic and clearly doesn’t feel good. I don’t know if this can just be from the over exertion yesterday or if it could be something more serious that I should get him to a vet for. Any thoughts would be appreciated.