We had an incident today involving our three week old BO and my cat. Another post in another forum. Anyway, after treating her now she's been making this trilling sound. Everything I look up says it's a happy sound. I'm confused. She can't be too happy right now. I only gave her penicillin so she can't be in a drug induced happiness, can she? What a day. I won't sleep until she recovers. And if she doesn't, I won't sleep again!