Welcome to Pet Talk!! I'm not too familiar with tonsillitis in dogs, but I see that Clara has posted some great info! I hope Finney gets well soon. And how wonderful that you adopted from HUA!! What an amazing rescue group! I also hope you'll stick around and become a "regular!" We'd love to get to know you and sweet Finney!! My name is Sandra and I have 2 dogs, 2 kitties and a guinea pig!