My dog has a frog in his throat

Poor Fenni, he stayed at the boarding kennel for 4 days while we were on our trip. He barked so much while he was there that now his doggie "voice" is just a hoarse, kind of croaking sound. The kids thinks it's hilarious and keep hyping him up, trying to get him to bark. I made him a pot of chicken noodle soup, but I guess there's not anything else that really needs to, or can be done for him. It's not any different than a human losing their voice, right?
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