hi debbie.so sorry to hear about your dog.how heartbreaking!i lost 2 of my birds last year.one in may(she was sick on & off).one in june.my beloved cockatiel spike who was 12 died suddenly.i had the vet look at him & he had an enlarged heart.nothing couldv'e been done.
i had s.g. blocks done a few years ago.didn't do anything for me though.
good luck with yours.
debbie