Oh, my god!!  There is only one treatment - run as fast as you can to the vet!  Good luck!

The above is an excellent answer.  Dogs are not aggressive and do not have behavioural problems unless something has been done to them, unless they have rabies or something like that, something unusual.  If you adopted him and don't know his past, anything may have happened.  Why put him down?  Take him to the vet, then take him to … Read more