So i've been feeding all of my girls Oxbow since the day I got them, they never had any problems with it. The oxbow I recently bought seems a bit darker, but it is the same forumla I have been buying. I just let out all my girls but Aphrodite was eating, so I let her finish before I grabbed her to come out with everyone. I left the room for about a minute to wash my makeup off, and I came back to a mucasy, smelled like oxbow kind of puke. I know rats cannot vomit. But should I be worried she brought her food up and its a bit mucasy? She's never done that before to my knowledge. She also went right back into the cage after I found it and immediately laid in her hammock, and usually shes the most spunky out of my girls.