So since my last update on Rocky when he has his chest infection from pasteurella, I picked him up last night and just behind his front leg on his side he has what feels like a quite big fluid filled sack. It doesn't seem to cause him any pain as he let me feel it with no pulling away etc. Does anyone have any idea what it might be? I'm going to get him to the vets asap to see but would just like to see if anyone here has any idea what it could be? It literally just feels like something filled with liquid under his skin. Do you think it could be linked to the pasteurella? Thanks in advance.