Can anyone help? My daughter's rat has a lump on the underside of her neck. It has only appeared in the last day and is large (half the size of her head). She is well in herself - eating and drinking etc. One of the other rats has been barbering her and I hoping it could just be an abscess as a result of barbering? We are taking down to the vets as soon as we can tomorrow but the complicating factor is we are off on a 2 week holiday on Saturday. If the vet has to operate, what is the rat's likely recovery time? Will she have to be kept separate from her sisters? Thank you in advance