I took my 1 year old GSP on a hunting trip to South Dakots for the first time this year. He did really good, but since we have been back he's been different. He is way more mellow and just seems his hole tempermant has changed..he is not hyper..lays around seems perfectly healthy eating fine no loose stool..Everyhting seems good. except he is so mellow now..Has anyone expierenced this before? I remember my breeder once telling me that once the dogs figure out what they are suppose to do in life..like hunt..that they change a little bit.. Is that true? Don't get me wrong I like him this way. but wondering if I should take him to the vet. Thanks