went ferreting today,had 3 from the first bury,when gutting them found weird growths inside two of them. very dark yellow and black,kind of marbled effect to the colouring,very firm and when cut open looked like chewed up raw meat! weirdest thing of all is the growths weren't attached to the guts,skin or rabbit in any way at all!just laid inside the body cavity! had 12 more and no more had it. any ideas??