When Rampage went boom boom today (yeah, I taught it to him as boom boom) there was some sort of mucus or gelatinous type of shell around it. There's been no change in his diet, though he did eat some lunch meat turkey, and has been eating some plastic and fluff from a chew toy he broke apart (only what I couldn't get away from him). Could any of this be the cause? Has anyone else had this happen? He just got a second of 3 puppy shots last week, don't know if that plays a factor in this, just thought it needed to be said. Thanks for your help in advance.