Hey guys. I went out looking for critters today and found this grub. I believe its a stag beetle larva. Wondering if anyone has kept one of these thru its change into a beetle. Also looking for any tips or info on care. I've got it in a sterilite container with moist soil substrate and plenty of leaf litter and decomposing wood pieces. Thanks for looking! Also, are those millipedes in the photo mating?