I had Venera out on the bed when she decided that she needed to pee. No big deal, sheets can be washed and mattresses can be scrubbed. After she peed (I'm not sure of the color because it was on blue patterened sheets) I lifted her up and she was dripping white, frothy, foamy stuff. I haven't changed her food or anything recently. Maybe it's stress? We have been traveling quite a bit. I am just really worried about her.