Does he seem to be in any pain or discomfort from this? If yes -take him to the vet, just in case there is some swelling or inflammation.
If not, then maybe wait a little while longer because this will probably go back to normal gradually. But obviously, if it doesn't in a few hours, go get him checked out.
I am guessing your dog isn't fixed? He's got excited -probably got the scent of a female in heat or something. Maybe even the scent has been trodden into your house on shoes etc. You won't smell it, and that won't do your house any harm....but it might be the reason why he remains so excited!
If you find him continuously sniffing a certain area....say beside your gate, or just outside your property, that might be the place where the scent has lingered. If you see that happening, you could scrub that area with hot water and disinfectant which will kill the scent. And cool his ardor!!
Copyright 1994-2018MedHelp.All rights reserved. MedHelp is a division of Vitals Consumer Services, LLC.
The Content on this Site is presented in a summary fashion, and is intended to be used for educational and entertainment purposes only. It is not intended to be and should not be interpreted as medical advice or a diagnosis of any health or fitness problem, condition or disease; or a recommendation for a specific test, doctor, care provider, procedure, treatment plan, product, or course of action. MedHelp is not a medical or healthcare provider and your use of this Site does not create a doctor / patient relationship. We disclaim all responsibility for the professional qualifications and licensing of, and services provided by, any physician or other health providers posting on or otherwise referred to on this Site and/or any Third Party Site. Never disregard the medical advice of your physician or health professional, or delay in seeking such advice, because of something you read on this Site. We offer this Site AS IS and without any warranties. By using this Site you agree to the following Terms and Conditions. If you think you may have a medical emergency, call your physician or 911 immediately.