Dog growled at baby :(

Melia 🤗 • Feminist. Pro-choice. Taken. Mother to a baby girl
I went to put my 3 month old in her bouncer and my chihuahua got in her face and growled at her. Has any one had this happen and what did you do?? I'm honestly thinking about giving him away because he's always been super aggressive and I don't want to take chances ;(