Spike (who is 6 1/2 months) had his rabies and bordatella shots today (at about noon). Right after we went to the vet, we went to the park and had a walk, and then we went home for a nap (I'm on night shift tonight!). When I left the house at 5 p.m. he was walking around, wagging his tail, but a lot less energetic than usual. The vet warned me that this is normal, especially in small breed puppies, but I'm still going home to check on him in my break. Has anyone else had a similar experience?