Why is my 8 week old Pom throwing up periodically? I've had her now for 2 weeks and she has been healthy. I changed her food last week because she was not eating it very well. She seemed to take to the food change very well but now a week later she threw up in the middle of the night. It was brown and then the last vomit was kind of frothy or mucus like? This has only happened once...please advise.
