hi,,we are new on here ,,and at the moment our male piggie seems to be in pain .He is 4 yrs old ,very tame ,and for last few days he lets out a squeal and hunches up his rear end,,kind of lifts up his rear and then squeals,,his droppings are formed still,, but there is a awful smell frm his rear end .He is eating well and is active in his run in the garden still. We can hear him squeal through the night every so often ,,any advice,,he has had apple wth olive oil on,, cucumber,,and loves all veg n greens ..and he really is a lovely pet to us and our 2 boys,,,,thank you..