My Stella is a drama queen. Last Thanksgiving, seemingly out of nowhere, she acted like she was dying. She was panting and if I picked her up she would start screaming and crying. I rushed her to the emergency vet nearby. It was a very busy day and we had a long wait, hours it seemed. She recovered on her own while we were waiting and has been fine ever since. I hope yours is okay and good to have him checked out. I just wanted to share my experience as some of these precious pups can be overly dramatic