I got him when he was 7 weeks old the caretaker said that he had gotten a respitory infection at 4 weeks and she had taken him to the vet where he received medication and finished it before he came to me. Since he's finished it he sneezes slot and I can hear him breathing. He seems happy and fine and no pain. Should I be concerned or is this just something he will have to grow into she said he was perfectly healthy after ihe was done with his meds but didn't mention this sneezing