or is it just mine? lol.....everytime i put my piggies in the run outside they keep sniffing each others bottoms and trying to jump on the others back, one does it a lot more than the other one though..... am starting to wonder if i have two boys now ?/ or is this normal piggie behaviour? they are around 11 weeks we believe. I have to say tho, I am loving being able to put them outside in the run, they absolutely love running around and are always chirping. x)